--- /dev/null
+/**
+ * Description of import/upgrade into Moodle:
+ *
+ * 1. Visit https://github.com/webrtc/adapter/releases.
+ * 2. Check if the version has been updated from what is listed in lib/thirdpartylibs.xml in the Moodle wwwroot.
+ * 3. If it has -
+ * 1. Download the source code.
+ * 2. Copy the content of the file release/adapter.js from the archive (ignore the first line).
+ * 3. Replace the content below "return (function e(t,n,r) .." in this file with the content you copied.
+ * 4. Ensure to update lib/thirdpartylibs.xml with any changes.
+ */
+
+// ESLint directives.
+/* eslint-disable */
+
+// JSHint directives.
+/* jshint ignore:start */
+
+define([], function() {
+return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+/*
+ * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree.
+ */
+ /* eslint-env node */
+'use strict';
+
+var SDPUtils = require('sdp');
+
+function writeMediaSection(transceiver, caps, type, stream, dtlsRole) {
+ var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);
+
+ // Map ICE parameters (ufrag, pwd) to SDP.
+ sdp += SDPUtils.writeIceParameters(
+ transceiver.iceGatherer.getLocalParameters());
+
+ // Map DTLS parameters to SDP.
+ sdp += SDPUtils.writeDtlsParameters(
+ transceiver.dtlsTransport.getLocalParameters(),
+ type === 'offer' ? 'actpass' : dtlsRole || 'active');
+
+ sdp += 'a=mid:' + transceiver.mid + '\r\n';
+
+ if (transceiver.rtpSender && transceiver.rtpReceiver) {
+ sdp += 'a=sendrecv\r\n';
+ } else if (transceiver.rtpSender) {
+ sdp += 'a=sendonly\r\n';
+ } else if (transceiver.rtpReceiver) {
+ sdp += 'a=recvonly\r\n';
+ } else {
+ sdp += 'a=inactive\r\n';
+ }
+
+ if (transceiver.rtpSender) {
+ var trackId = transceiver.rtpSender._initialTrackId ||
+ transceiver.rtpSender.track.id;
+ transceiver.rtpSender._initialTrackId = trackId;
+ // spec.
+ var msid = 'msid:' + (stream ? stream.id : '-') + ' ' +
+ trackId + '\r\n';
+ sdp += 'a=' + msid;
+ // for Chrome. Legacy should no longer be required.
+ sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +
+ ' ' + msid;
+
+ // RTX
+ if (transceiver.sendEncodingParameters[0].rtx) {
+ sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +
+ ' ' + msid;
+ sdp += 'a=ssrc-group:FID ' +
+ transceiver.sendEncodingParameters[0].ssrc + ' ' +
+ transceiver.sendEncodingParameters[0].rtx.ssrc +
+ '\r\n';
+ }
+ }
+ // FIXME: this should be written by writeRtpDescription.
+ sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +
+ ' cname:' + SDPUtils.localCName + '\r\n';
+ if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) {
+ sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +
+ ' cname:' + SDPUtils.localCName + '\r\n';
+ }
+ return sdp;
+}
+
+// Edge does not like
+// 1) stun: filtered after 14393 unless ?transport=udp is present
+// 2) turn: that does not have all of turn:host:port?transport=udp
+// 3) turn: with ipv6 addresses
+// 4) turn: occurring muliple times
+function filterIceServers(iceServers, edgeVersion) {
+ var hasTurn = false;
+ iceServers = JSON.parse(JSON.stringify(iceServers));
+ return iceServers.filter(function(server) {
+ if (server && (server.urls || server.url)) {
+ var urls = server.urls || server.url;
+ if (server.url && !server.urls) {
+ console.warn('RTCIceServer.url is deprecated! Use urls instead.');
+ }
+ var isString = typeof urls === 'string';
+ if (isString) {
+ urls = [urls];
+ }
+ urls = urls.filter(function(url) {
+ var validTurn = url.indexOf('turn:') === 0 &&
+ url.indexOf('transport=udp') !== -1 &&
+ url.indexOf('turn:[') === -1 &&
+ !hasTurn;
+
+ if (validTurn) {
+ hasTurn = true;
+ return true;
+ }
+ return url.indexOf('stun:') === 0 && edgeVersion >= 14393 &&
+ url.indexOf('?transport=udp') === -1;
+ });
+
+ delete server.url;
+ server.urls = isString ? urls[0] : urls;
+ return !!urls.length;
+ }
+ });
+}
+
+// Determines the intersection of local and remote capabilities.
+function getCommonCapabilities(localCapabilities, remoteCapabilities) {
+ var commonCapabilities = {
+ codecs: [],
+ headerExtensions: [],
+ fecMechanisms: []
+ };
+
+ var findCodecByPayloadType = function(pt, codecs) {
+ pt = parseInt(pt, 10);
+ for (var i = 0; i < codecs.length; i++) {
+ if (codecs[i].payloadType === pt ||
+ codecs[i].preferredPayloadType === pt) {
+ return codecs[i];
+ }
+ }
+ };
+
+ var rtxCapabilityMatches = function(lRtx, rRtx, lCodecs, rCodecs) {
+ var lCodec = findCodecByPayloadType(lRtx.parameters.apt, lCodecs);
+ var rCodec = findCodecByPayloadType(rRtx.parameters.apt, rCodecs);
+ return lCodec && rCodec &&
+ lCodec.name.toLowerCase() === rCodec.name.toLowerCase();
+ };
+
+ localCapabilities.codecs.forEach(function(lCodec) {
+ for (var i = 0; i < remoteCapabilities.codecs.length; i++) {
+ var rCodec = remoteCapabilities.codecs[i];
+ if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&
+ lCodec.clockRate === rCodec.clockRate) {
+ if (lCodec.name.toLowerCase() === 'rtx' &&
+ lCodec.parameters && rCodec.parameters.apt) {
+ // for RTX we need to find the local rtx that has a apt
+ // which points to the same local codec as the remote one.
+ if (!rtxCapabilityMatches(lCodec, rCodec,
+ localCapabilities.codecs, remoteCapabilities.codecs)) {
+ continue;
+ }
+ }
+ rCodec = JSON.parse(JSON.stringify(rCodec)); // deepcopy
+ // number of channels is the highest common number of channels
+ rCodec.numChannels = Math.min(lCodec.numChannels,
+ rCodec.numChannels);
+ // push rCodec so we reply with offerer payload type
+ commonCapabilities.codecs.push(rCodec);
+
+ // determine common feedback mechanisms
+ rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) {
+ for (var j = 0; j < lCodec.rtcpFeedback.length; j++) {
+ if (lCodec.rtcpFeedback[j].type === fb.type &&
+ lCodec.rtcpFeedback[j].parameter === fb.parameter) {
+ return true;
+ }
+ }
+ return false;
+ });
+ // FIXME: also need to determine .parameters
+ // see https://github.com/openpeer/ortc/issues/569
+ break;
+ }
+ }
+ });
+
+ localCapabilities.headerExtensions.forEach(function(lHeaderExtension) {
+ for (var i = 0; i < remoteCapabilities.headerExtensions.length;
+ i++) {
+ var rHeaderExtension = remoteCapabilities.headerExtensions[i];
+ if (lHeaderExtension.uri === rHeaderExtension.uri) {
+ commonCapabilities.headerExtensions.push(rHeaderExtension);
+ break;
+ }
+ }
+ });
+
+ // FIXME: fecMechanisms
+ return commonCapabilities;
+}
+
+// is action=setLocalDescription with type allowed in signalingState
+function isActionAllowedInSignalingState(action, type, signalingState) {
+ return {
+ offer: {
+ setLocalDescription: ['stable', 'have-local-offer'],
+ setRemoteDescription: ['stable', 'have-remote-offer']
+ },
+ answer: {
+ setLocalDescription: ['have-remote-offer', 'have-local-pranswer'],
+ setRemoteDescription: ['have-local-offer', 'have-remote-pranswer']
+ }
+ }[type][action].indexOf(signalingState) !== -1;
+}
+
+function maybeAddCandidate(iceTransport, candidate) {
+ // Edge's internal representation adds some fields therefore
+ // not all fieldѕ are taken into account.
+ var alreadyAdded = iceTransport.getRemoteCandidates()
+ .find(function(remoteCandidate) {
+ return candidate.foundation === remoteCandidate.foundation &&
+ candidate.ip === remoteCandidate.ip &&
+ candidate.port === remoteCandidate.port &&
+ candidate.priority === remoteCandidate.priority &&
+ candidate.protocol === remoteCandidate.protocol &&
+ candidate.type === remoteCandidate.type;
+ });
+ if (!alreadyAdded) {
+ iceTransport.addRemoteCandidate(candidate);
+ }
+ return !alreadyAdded;
+}
+
+
+function makeError(name, description) {
+ var e = new Error(description);
+ e.name = name;
+ // legacy error codes from https://heycam.github.io/webidl/#idl-DOMException-error-names
+ e.code = {
+ NotSupportedError: 9,
+ InvalidStateError: 11,
+ InvalidAccessError: 15,
+ TypeError: undefined,
+ OperationError: undefined
+ }[name];
+ return e;
+}
+
+module.exports = function(window, edgeVersion) {
+ // https://w3c.github.io/mediacapture-main/#mediastream
+ // Helper function to add the track to the stream and
+ // dispatch the event ourselves.
+ function addTrackToStreamAndFireEvent(track, stream) {
+ stream.addTrack(track);
+ stream.dispatchEvent(new window.MediaStreamTrackEvent('addtrack',
+ {track: track}));
+ }
+
+ function removeTrackFromStreamAndFireEvent(track, stream) {
+ stream.removeTrack(track);
+ stream.dispatchEvent(new window.MediaStreamTrackEvent('removetrack',
+ {track: track}));
+ }
+
+ function fireAddTrack(pc, track, receiver, streams) {
+ var trackEvent = new Event('track');
+ trackEvent.track = track;
+ trackEvent.receiver = receiver;
+ trackEvent.transceiver = {receiver: receiver};
+ trackEvent.streams = streams;
+ window.setTimeout(function() {
+ pc._dispatchEvent('track', trackEvent);
+ });
+ }
+
+ var RTCPeerConnection = function(config) {
+ var pc = this;
+
+ var _eventTarget = document.createDocumentFragment();
+ ['addEventListener', 'removeEventListener', 'dispatchEvent']
+ .forEach(function(method) {
+ pc[method] = _eventTarget[method].bind(_eventTarget);
+ });
+
+ this.canTrickleIceCandidates = null;
+
+ this.needNegotiation = false;
+
+ this.localStreams = [];
+ this.remoteStreams = [];
+
+ this.localDescription = null;
+ this.remoteDescription = null;
+
+ this.signalingState = 'stable';
+ this.iceConnectionState = 'new';
+ this.connectionState = 'new';
+ this.iceGatheringState = 'new';
+
+ config = JSON.parse(JSON.stringify(config || {}));
+
+ this.usingBundle = config.bundlePolicy === 'max-bundle';
+ if (config.rtcpMuxPolicy === 'negotiate') {
+ throw(makeError('NotSupportedError',
+ 'rtcpMuxPolicy \'negotiate\' is not supported'));
+ } else if (!config.rtcpMuxPolicy) {
+ config.rtcpMuxPolicy = 'require';
+ }
+
+ switch (config.iceTransportPolicy) {
+ case 'all':
+ case 'relay':
+ break;
+ default:
+ config.iceTransportPolicy = 'all';
+ break;
+ }
+
+ switch (config.bundlePolicy) {
+ case 'balanced':
+ case 'max-compat':
+ case 'max-bundle':
+ break;
+ default:
+ config.bundlePolicy = 'balanced';
+ break;
+ }
+
+ config.iceServers = filterIceServers(config.iceServers || [], edgeVersion);
+
+ this._iceGatherers = [];
+ if (config.iceCandidatePoolSize) {
+ for (var i = config.iceCandidatePoolSize; i > 0; i--) {
+ this._iceGatherers.push(new window.RTCIceGatherer({
+ iceServers: config.iceServers,
+ gatherPolicy: config.iceTransportPolicy
+ }));
+ }
+ } else {
+ config.iceCandidatePoolSize = 0;
+ }
+
+ this._config = config;
+
+ // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...
+ // everything that is needed to describe a SDP m-line.
+ this.transceivers = [];
+
+ this._sdpSessionId = SDPUtils.generateSessionId();
+ this._sdpSessionVersion = 0;
+
+ this._dtlsRole = undefined; // role for a=setup to use in answers.
+
+ this._isClosed = false;
+ };
+
+ // set up event handlers on prototype
+ RTCPeerConnection.prototype.onicecandidate = null;
+ RTCPeerConnection.prototype.onaddstream = null;
+ RTCPeerConnection.prototype.ontrack = null;
+ RTCPeerConnection.prototype.onremovestream = null;
+ RTCPeerConnection.prototype.onsignalingstatechange = null;
+ RTCPeerConnection.prototype.oniceconnectionstatechange = null;
+ RTCPeerConnection.prototype.onconnectionstatechange = null;
+ RTCPeerConnection.prototype.onicegatheringstatechange = null;
+ RTCPeerConnection.prototype.onnegotiationneeded = null;
+ RTCPeerConnection.prototype.ondatachannel = null;
+
+ RTCPeerConnection.prototype._dispatchEvent = function(name, event) {
+ if (this._isClosed) {
+ return;
+ }
+ this.dispatchEvent(event);
+ if (typeof this['on' + name] === 'function') {
+ this['on' + name](event);
+ }
+ };
+
+ RTCPeerConnection.prototype._emitGatheringStateChange = function() {
+ var event = new Event('icegatheringstatechange');
+ this._dispatchEvent('icegatheringstatechange', event);
+ };
+
+ RTCPeerConnection.prototype.getConfiguration = function() {
+ return this._config;
+ };
+
+ RTCPeerConnection.prototype.getLocalStreams = function() {
+ return this.localStreams;
+ };
+
+ RTCPeerConnection.prototype.getRemoteStreams = function() {
+ return this.remoteStreams;
+ };
+
+ // internal helper to create a transceiver object.
+ // (which is not yet the same as the WebRTC 1.0 transceiver)
+ RTCPeerConnection.prototype._createTransceiver = function(kind, doNotAdd) {
+ var hasBundleTransport = this.transceivers.length > 0;
+ var transceiver = {
+ track: null,
+ iceGatherer: null,
+ iceTransport: null,
+ dtlsTransport: null,
+ localCapabilities: null,
+ remoteCapabilities: null,
+ rtpSender: null,
+ rtpReceiver: null,
+ kind: kind,
+ mid: null,
+ sendEncodingParameters: null,
+ recvEncodingParameters: null,
+ stream: null,
+ associatedRemoteMediaStreams: [],
+ wantReceive: true
+ };
+ if (this.usingBundle && hasBundleTransport) {
+ transceiver.iceTransport = this.transceivers[0].iceTransport;
+ transceiver.dtlsTransport = this.transceivers[0].dtlsTransport;
+ } else {
+ var transports = this._createIceAndDtlsTransports();
+ transceiver.iceTransport = transports.iceTransport;
+ transceiver.dtlsTransport = transports.dtlsTransport;
+ }
+ if (!doNotAdd) {
+ this.transceivers.push(transceiver);
+ }
+ return transceiver;
+ };
+
+ RTCPeerConnection.prototype.addTrack = function(track, stream) {
+ if (this._isClosed) {
+ throw makeError('InvalidStateError',
+ 'Attempted to call addTrack on a closed peerconnection.');
+ }
+
+ var alreadyExists = this.transceivers.find(function(s) {
+ return s.track === track;
+ });
+
+ if (alreadyExists) {
+ throw makeError('InvalidAccessError', 'Track already exists.');
+ }
+
+ var transceiver;
+ for (var i = 0; i < this.transceivers.length; i++) {
+ if (!this.transceivers[i].track &&
+ this.transceivers[i].kind === track.kind) {
+ transceiver = this.transceivers[i];
+ }
+ }
+ if (!transceiver) {
+ transceiver = this._createTransceiver(track.kind);
+ }
+
+ this._maybeFireNegotiationNeeded();
+
+ if (this.localStreams.indexOf(stream) === -1) {
+ this.localStreams.push(stream);
+ }
+
+ transceiver.track = track;
+ transceiver.stream = stream;
+ transceiver.rtpSender = new window.RTCRtpSender(track,
+ transceiver.dtlsTransport);
+ return transceiver.rtpSender;
+ };
+
+ RTCPeerConnection.prototype.addStream = function(stream) {
+ var pc = this;
+ if (edgeVersion >= 15025) {
+ stream.getTracks().forEach(function(track) {
+ pc.addTrack(track, stream);
+ });
+ } else {
+ // Clone is necessary for local demos mostly, attaching directly
+ // to two different senders does not work (build 10547).
+ // Fixed in 15025 (or earlier)
+ var clonedStream = stream.clone();
+ stream.getTracks().forEach(function(track, idx) {
+ var clonedTrack = clonedStream.getTracks()[idx];
+ track.addEventListener('enabled', function(event) {
+ clonedTrack.enabled = event.enabled;
+ });
+ });
+ clonedStream.getTracks().forEach(function(track) {
+ pc.addTrack(track, clonedStream);
+ });
+ }
+ };
+
+ RTCPeerConnection.prototype.removeTrack = function(sender) {
+ if (this._isClosed) {
+ throw makeError('InvalidStateError',
+ 'Attempted to call removeTrack on a closed peerconnection.');
+ }
+
+ if (!(sender instanceof window.RTCRtpSender)) {
+ throw new TypeError('Argument 1 of RTCPeerConnection.removeTrack ' +
+ 'does not implement interface RTCRtpSender.');
+ }
+
+ var transceiver = this.transceivers.find(function(t) {
+ return t.rtpSender === sender;
+ });
+
+ if (!transceiver) {
+ throw makeError('InvalidAccessError',
+ 'Sender was not created by this connection.');
+ }
+ var stream = transceiver.stream;
+
+ transceiver.rtpSender.stop();
+ transceiver.rtpSender = null;
+ transceiver.track = null;
+ transceiver.stream = null;
+
+ // remove the stream from the set of local streams
+ var localStreams = this.transceivers.map(function(t) {
+ return t.stream;
+ });
+ if (localStreams.indexOf(stream) === -1 &&
+ this.localStreams.indexOf(stream) > -1) {
+ this.localStreams.splice(this.localStreams.indexOf(stream), 1);
+ }
+
+ this._maybeFireNegotiationNeeded();
+ };
+
+ RTCPeerConnection.prototype.removeStream = function(stream) {
+ var pc = this;
+ stream.getTracks().forEach(function(track) {
+ var sender = pc.getSenders().find(function(s) {
+ return s.track === track;
+ });
+ if (sender) {
+ pc.removeTrack(sender);
+ }
+ });
+ };
+
+ RTCPeerConnection.prototype.getSenders = function() {
+ return this.transceivers.filter(function(transceiver) {
+ return !!transceiver.rtpSender;
+ })
+ .map(function(transceiver) {
+ return transceiver.rtpSender;
+ });
+ };
+
+ RTCPeerConnection.prototype.getReceivers = function() {
+ return this.transceivers.filter(function(transceiver) {
+ return !!transceiver.rtpReceiver;
+ })
+ .map(function(transceiver) {
+ return transceiver.rtpReceiver;
+ });
+ };
+
+
+ RTCPeerConnection.prototype._createIceGatherer = function(sdpMLineIndex,
+ usingBundle) {
+ var pc = this;
+ if (usingBundle && sdpMLineIndex > 0) {
+ return this.transceivers[0].iceGatherer;
+ } else if (this._iceGatherers.length) {
+ return this._iceGatherers.shift();
+ }
+ var iceGatherer = new window.RTCIceGatherer({
+ iceServers: this._config.iceServers,
+ gatherPolicy: this._config.iceTransportPolicy
+ });
+ Object.defineProperty(iceGatherer, 'state',
+ {value: 'new', writable: true}
+ );
+
+ this.transceivers[sdpMLineIndex].bufferedCandidateEvents = [];
+ this.transceivers[sdpMLineIndex].bufferCandidates = function(event) {
+ var end = !event.candidate || Object.keys(event.candidate).length === 0;
+ // polyfill since RTCIceGatherer.state is not implemented in
+ // Edge 10547 yet.
+ iceGatherer.state = end ? 'completed' : 'gathering';
+ if (pc.transceivers[sdpMLineIndex].bufferedCandidateEvents !== null) {
+ pc.transceivers[sdpMLineIndex].bufferedCandidateEvents.push(event);
+ }
+ };
+ iceGatherer.addEventListener('localcandidate',
+ this.transceivers[sdpMLineIndex].bufferCandidates);
+ return iceGatherer;
+ };
+
+ // start gathering from an RTCIceGatherer.
+ RTCPeerConnection.prototype._gather = function(mid, sdpMLineIndex) {
+ var pc = this;
+ var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer;
+ if (iceGatherer.onlocalcandidate) {
+ return;
+ }
+ var bufferedCandidateEvents =
+ this.transceivers[sdpMLineIndex].bufferedCandidateEvents;
+ this.transceivers[sdpMLineIndex].bufferedCandidateEvents = null;
+ iceGatherer.removeEventListener('localcandidate',
+ this.transceivers[sdpMLineIndex].bufferCandidates);
+ iceGatherer.onlocalcandidate = function(evt) {
+ if (pc.usingBundle && sdpMLineIndex > 0) {
+ // if we know that we use bundle we can drop candidates with
+ // Ñ•dpMLineIndex > 0. If we don't do this then our state gets
+ // confused since we dispose the extra ice gatherer.
+ return;
+ }
+ var event = new Event('icecandidate');
+ event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};
+
+ var cand = evt.candidate;
+ // Edge emits an empty object for RTCIceCandidateComplete‥
+ var end = !cand || Object.keys(cand).length === 0;
+ if (end) {
+ // polyfill since RTCIceGatherer.state is not implemented in
+ // Edge 10547 yet.
+ if (iceGatherer.state === 'new' || iceGatherer.state === 'gathering') {
+ iceGatherer.state = 'completed';
+ }
+ } else {
+ if (iceGatherer.state === 'new') {
+ iceGatherer.state = 'gathering';
+ }
+ // RTCIceCandidate doesn't have a component, needs to be added
+ cand.component = 1;
+ // also the usernameFragment. TODO: update SDP to take both variants.
+ cand.ufrag = iceGatherer.getLocalParameters().usernameFragment;
+
+ var serializedCandidate = SDPUtils.writeCandidate(cand);
+ event.candidate = Object.assign(event.candidate,
+ SDPUtils.parseCandidate(serializedCandidate));
+
+ event.candidate.candidate = serializedCandidate;
+ event.candidate.toJSON = function() {
+ return {
+ candidate: event.candidate.candidate,
+ sdpMid: event.candidate.sdpMid,
+ sdpMLineIndex: event.candidate.sdpMLineIndex,
+ usernameFragment: event.candidate.usernameFragment
+ };
+ };
+ }
+
+ // update local description.
+ var sections = SDPUtils.getMediaSections(pc.localDescription.sdp);
+ if (!end) {
+ sections[event.candidate.sdpMLineIndex] +=
+ 'a=' + event.candidate.candidate + '\r\n';
+ } else {
+ sections[event.candidate.sdpMLineIndex] +=
+ 'a=end-of-candidates\r\n';
+ }
+ pc.localDescription.sdp =
+ SDPUtils.getDescription(pc.localDescription.sdp) +
+ sections.join('');
+ var complete = pc.transceivers.every(function(transceiver) {
+ return transceiver.iceGatherer &&
+ transceiver.iceGatherer.state === 'completed';
+ });
+
+ if (pc.iceGatheringState !== 'gathering') {
+ pc.iceGatheringState = 'gathering';
+ pc._emitGatheringStateChange();
+ }
+
+ // Emit candidate. Also emit null candidate when all gatherers are
+ // complete.
+ if (!end) {
+ pc._dispatchEvent('icecandidate', event);
+ }
+ if (complete) {
+ pc._dispatchEvent('icecandidate', new Event('icecandidate'));
+ pc.iceGatheringState = 'complete';
+ pc._emitGatheringStateChange();
+ }
+ };
+
+ // emit already gathered candidates.
+ window.setTimeout(function() {
+ bufferedCandidateEvents.forEach(function(e) {
+ iceGatherer.onlocalcandidate(e);
+ });
+ }, 0);
+ };
+
+ // Create ICE transport and DTLS transport.
+ RTCPeerConnection.prototype._createIceAndDtlsTransports = function() {
+ var pc = this;
+ var iceTransport = new window.RTCIceTransport(null);
+ iceTransport.onicestatechange = function() {
+ pc._updateIceConnectionState();
+ pc._updateConnectionState();
+ };
+
+ var dtlsTransport = new window.RTCDtlsTransport(iceTransport);
+ dtlsTransport.ondtlsstatechange = function() {
+ pc._updateConnectionState();
+ };
+ dtlsTransport.onerror = function() {
+ // onerror does not set state to failed by itself.
+ Object.defineProperty(dtlsTransport, 'state',
+ {value: 'failed', writable: true});
+ pc._updateConnectionState();
+ };
+
+ return {
+ iceTransport: iceTransport,
+ dtlsTransport: dtlsTransport
+ };
+ };
+
+ // Destroy ICE gatherer, ICE transport and DTLS transport.
+ // Without triggering the callbacks.
+ RTCPeerConnection.prototype._disposeIceAndDtlsTransports = function(
+ sdpMLineIndex) {
+ var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer;
+ if (iceGatherer) {
+ delete iceGatherer.onlocalcandidate;
+ delete this.transceivers[sdpMLineIndex].iceGatherer;
+ }
+ var iceTransport = this.transceivers[sdpMLineIndex].iceTransport;
+ if (iceTransport) {
+ delete iceTransport.onicestatechange;
+ delete this.transceivers[sdpMLineIndex].iceTransport;
+ }
+ var dtlsTransport = this.transceivers[sdpMLineIndex].dtlsTransport;
+ if (dtlsTransport) {
+ delete dtlsTransport.ondtlsstatechange;
+ delete dtlsTransport.onerror;
+ delete this.transceivers[sdpMLineIndex].dtlsTransport;
+ }
+ };
+
+ // Start the RTP Sender and Receiver for a transceiver.
+ RTCPeerConnection.prototype._transceive = function(transceiver,
+ send, recv) {
+ var params = getCommonCapabilities(transceiver.localCapabilities,
+ transceiver.remoteCapabilities);
+ if (send && transceiver.rtpSender) {
+ params.encodings = transceiver.sendEncodingParameters;
+ params.rtcp = {
+ cname: SDPUtils.localCName,
+ compound: transceiver.rtcpParameters.compound
+ };
+ if (transceiver.recvEncodingParameters.length) {
+ params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;
+ }
+ transceiver.rtpSender.send(params);
+ }
+ if (recv && transceiver.rtpReceiver && params.codecs.length > 0) {
+ // remove RTX field in Edge 14942
+ if (transceiver.kind === 'video'
+ && transceiver.recvEncodingParameters
+ && edgeVersion < 15019) {
+ transceiver.recvEncodingParameters.forEach(function(p) {
+ delete p.rtx;
+ });
+ }
+ if (transceiver.recvEncodingParameters.length) {
+ params.encodings = transceiver.recvEncodingParameters;
+ } else {
+ params.encodings = [{}];
+ }
+ params.rtcp = {
+ compound: transceiver.rtcpParameters.compound
+ };
+ if (transceiver.rtcpParameters.cname) {
+ params.rtcp.cname = transceiver.rtcpParameters.cname;
+ }
+ if (transceiver.sendEncodingParameters.length) {
+ params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;
+ }
+ transceiver.rtpReceiver.receive(params);
+ }
+ };
+
+ RTCPeerConnection.prototype.setLocalDescription = function(description) {
+ var pc = this;
+
+ // Note: pranswer is not supported.
+ if (['offer', 'answer'].indexOf(description.type) === -1) {
+ return Promise.reject(makeError('TypeError',
+ 'Unsupported type "' + description.type + '"'));
+ }
+
+ if (!isActionAllowedInSignalingState('setLocalDescription',
+ description.type, pc.signalingState) || pc._isClosed) {
+ return Promise.reject(makeError('InvalidStateError',
+ 'Can not set local ' + description.type +
+ ' in state ' + pc.signalingState));
+ }
+
+ var sections;
+ var sessionpart;
+ if (description.type === 'offer') {
+ // VERY limited support for SDP munging. Limited to:
+ // * changing the order of codecs
+ sections = SDPUtils.splitSections(description.sdp);
+ sessionpart = sections.shift();
+ sections.forEach(function(mediaSection, sdpMLineIndex) {
+ var caps = SDPUtils.parseRtpParameters(mediaSection);
+ pc.transceivers[sdpMLineIndex].localCapabilities = caps;
+ });
+
+ pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {
+ pc._gather(transceiver.mid, sdpMLineIndex);
+ });
+ } else if (description.type === 'answer') {
+ sections = SDPUtils.splitSections(pc.remoteDescription.sdp);
+ sessionpart = sections.shift();
+ var isIceLite = SDPUtils.matchPrefix(sessionpart,
+ 'a=ice-lite').length > 0;
+ sections.forEach(function(mediaSection, sdpMLineIndex) {
+ var transceiver = pc.transceivers[sdpMLineIndex];
+ var iceGatherer = transceiver.iceGatherer;
+ var iceTransport = transceiver.iceTransport;
+ var dtlsTransport = transceiver.dtlsTransport;
+ var localCapabilities = transceiver.localCapabilities;
+ var remoteCapabilities = transceiver.remoteCapabilities;
+
+ // treat bundle-only as not-rejected.
+ var rejected = SDPUtils.isRejected(mediaSection) &&
+ SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0;
+
+ if (!rejected && !transceiver.rejected) {
+ var remoteIceParameters = SDPUtils.getIceParameters(
+ mediaSection, sessionpart);
+ var remoteDtlsParameters = SDPUtils.getDtlsParameters(
+ mediaSection, sessionpart);
+ if (isIceLite) {
+ remoteDtlsParameters.role = 'server';
+ }
+
+ if (!pc.usingBundle || sdpMLineIndex === 0) {
+ pc._gather(transceiver.mid, sdpMLineIndex);
+ if (iceTransport.state === 'new') {
+ iceTransport.start(iceGatherer, remoteIceParameters,
+ isIceLite ? 'controlling' : 'controlled');
+ }
+ if (dtlsTransport.state === 'new') {
+ dtlsTransport.start(remoteDtlsParameters);
+ }
+ }
+
+ // Calculate intersection of capabilities.
+ var params = getCommonCapabilities(localCapabilities,
+ remoteCapabilities);
+
+ // Start the RTCRtpSender. The RTCRtpReceiver for this
+ // transceiver has already been started in setRemoteDescription.
+ pc._transceive(transceiver,
+ params.codecs.length > 0,
+ false);
+ }
+ });
+ }
+
+ pc.localDescription = {
+ type: description.type,
+ sdp: description.sdp
+ };
+ if (description.type === 'offer') {
+ pc._updateSignalingState('have-local-offer');
+ } else {
+ pc._updateSignalingState('stable');
+ }
+
+ return Promise.resolve();
+ };
+
+ RTCPeerConnection.prototype.setRemoteDescription = function(description) {
+ var pc = this;
+
+ // Note: pranswer is not supported.
+ if (['offer', 'answer'].indexOf(description.type) === -1) {
+ return Promise.reject(makeError('TypeError',
+ 'Unsupported type "' + description.type + '"'));
+ }
+
+ if (!isActionAllowedInSignalingState('setRemoteDescription',
+ description.type, pc.signalingState) || pc._isClosed) {
+ return Promise.reject(makeError('InvalidStateError',
+ 'Can not set remote ' + description.type +
+ ' in state ' + pc.signalingState));
+ }
+
+ var streams = {};
+ pc.remoteStreams.forEach(function(stream) {
+ streams[stream.id] = stream;
+ });
+ var receiverList = [];
+ var sections = SDPUtils.splitSections(description.sdp);
+ var sessionpart = sections.shift();
+ var isIceLite = SDPUtils.matchPrefix(sessionpart,
+ 'a=ice-lite').length > 0;
+ var usingBundle = SDPUtils.matchPrefix(sessionpart,
+ 'a=group:BUNDLE ').length > 0;
+ pc.usingBundle = usingBundle;
+ var iceOptions = SDPUtils.matchPrefix(sessionpart,
+ 'a=ice-options:')[0];
+ if (iceOptions) {
+ pc.canTrickleIceCandidates = iceOptions.substr(14).split(' ')
+ .indexOf('trickle') >= 0;
+ } else {
+ pc.canTrickleIceCandidates = false;
+ }
+
+ sections.forEach(function(mediaSection, sdpMLineIndex) {
+ var lines = SDPUtils.splitLines(mediaSection);
+ var kind = SDPUtils.getKind(mediaSection);
+ // treat bundle-only as not-rejected.
+ var rejected = SDPUtils.isRejected(mediaSection) &&
+ SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0;
+ var protocol = lines[0].substr(2).split(' ')[2];
+
+ var direction = SDPUtils.getDirection(mediaSection, sessionpart);
+ var remoteMsid = SDPUtils.parseMsid(mediaSection);
+
+ var mid = SDPUtils.getMid(mediaSection) || SDPUtils.generateIdentifier();
+
+ // Reject datachannels which are not implemented yet.
+ if ((kind === 'application' && protocol === 'DTLS/SCTP') || rejected) {
+ // TODO: this is dangerous in the case where a non-rejected m-line
+ // becomes rejected.
+ pc.transceivers[sdpMLineIndex] = {
+ mid: mid,
+ kind: kind,
+ rejected: true
+ };
+ return;
+ }
+
+ if (!rejected && pc.transceivers[sdpMLineIndex] &&
+ pc.transceivers[sdpMLineIndex].rejected) {
+ // recycle a rejected transceiver.
+ pc.transceivers[sdpMLineIndex] = pc._createTransceiver(kind, true);
+ }
+
+ var transceiver;
+ var iceGatherer;
+ var iceTransport;
+ var dtlsTransport;
+ var rtpReceiver;
+ var sendEncodingParameters;
+ var recvEncodingParameters;
+ var localCapabilities;
+
+ var track;
+ // FIXME: ensure the mediaSection has rtcp-mux set.
+ var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);
+ var remoteIceParameters;
+ var remoteDtlsParameters;
+ if (!rejected) {
+ remoteIceParameters = SDPUtils.getIceParameters(mediaSection,
+ sessionpart);
+ remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,
+ sessionpart);
+ remoteDtlsParameters.role = 'client';
+ }
+ recvEncodingParameters =
+ SDPUtils.parseRtpEncodingParameters(mediaSection);
+
+ var rtcpParameters = SDPUtils.parseRtcpParameters(mediaSection);
+
+ var isComplete = SDPUtils.matchPrefix(mediaSection,
+ 'a=end-of-candidates', sessionpart).length > 0;
+ var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')
+ .map(function(cand) {
+ return SDPUtils.parseCandidate(cand);
+ })
+ .filter(function(cand) {
+ return cand.component === 1;
+ });
+
+ // Check if we can use BUNDLE and dispose transports.
+ if ((description.type === 'offer' || description.type === 'answer') &&
+ !rejected && usingBundle && sdpMLineIndex > 0 &&
+ pc.transceivers[sdpMLineIndex]) {
+ pc._disposeIceAndDtlsTransports(sdpMLineIndex);
+ pc.transceivers[sdpMLineIndex].iceGatherer =
+ pc.transceivers[0].iceGatherer;
+ pc.transceivers[sdpMLineIndex].iceTransport =
+ pc.transceivers[0].iceTransport;
+ pc.transceivers[sdpMLineIndex].dtlsTransport =
+ pc.transceivers[0].dtlsTransport;
+ if (pc.transceivers[sdpMLineIndex].rtpSender) {
+ pc.transceivers[sdpMLineIndex].rtpSender.setTransport(
+ pc.transceivers[0].dtlsTransport);
+ }
+ if (pc.transceivers[sdpMLineIndex].rtpReceiver) {
+ pc.transceivers[sdpMLineIndex].rtpReceiver.setTransport(
+ pc.transceivers[0].dtlsTransport);
+ }
+ }
+ if (description.type === 'offer' && !rejected) {
+ transceiver = pc.transceivers[sdpMLineIndex] ||
+ pc._createTransceiver(kind);
+ transceiver.mid = mid;
+
+ if (!transceiver.iceGatherer) {
+ transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex,
+ usingBundle);
+ }
+
+ if (cands.length && transceiver.iceTransport.state === 'new') {
+ if (isComplete && (!usingBundle || sdpMLineIndex === 0)) {
+ transceiver.iceTransport.setRemoteCandidates(cands);
+ } else {
+ cands.forEach(function(candidate) {
+ maybeAddCandidate(transceiver.iceTransport, candidate);
+ });
+ }
+ }
+
+ localCapabilities = window.RTCRtpReceiver.getCapabilities(kind);
+
+ // filter RTX until additional stuff needed for RTX is implemented
+ // in adapter.js
+ if (edgeVersion < 15019) {
+ localCapabilities.codecs = localCapabilities.codecs.filter(
+ function(codec) {
+ return codec.name !== 'rtx';
+ });
+ }
+
+ sendEncodingParameters = transceiver.sendEncodingParameters || [{
+ ssrc: (2 * sdpMLineIndex + 2) * 1001
+ }];
+
+ // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams
+ var isNewTrack = false;
+ if (direction === 'sendrecv' || direction === 'sendonly') {
+ isNewTrack = !transceiver.rtpReceiver;
+ rtpReceiver = transceiver.rtpReceiver ||
+ new window.RTCRtpReceiver(transceiver.dtlsTransport, kind);
+
+ if (isNewTrack) {
+ var stream;
+ track = rtpReceiver.track;
+ // FIXME: does not work with Plan B.
+ if (remoteMsid && remoteMsid.stream === '-') {
+ // no-op. a stream id of '-' means: no associated stream.
+ } else if (remoteMsid) {
+ if (!streams[remoteMsid.stream]) {
+ streams[remoteMsid.stream] = new window.MediaStream();
+ Object.defineProperty(streams[remoteMsid.stream], 'id', {
+ get: function() {
+ return remoteMsid.stream;
+ }
+ });
+ }
+ Object.defineProperty(track, 'id', {
+ get: function() {
+ return remoteMsid.track;
+ }
+ });
+ stream = streams[remoteMsid.stream];
+ } else {
+ if (!streams.default) {
+ streams.default = new window.MediaStream();
+ }
+ stream = streams.default;
+ }
+ if (stream) {
+ addTrackToStreamAndFireEvent(track, stream);
+ transceiver.associatedRemoteMediaStreams.push(stream);
+ }
+ receiverList.push([track, rtpReceiver, stream]);
+ }
+ } else if (transceiver.rtpReceiver && transceiver.rtpReceiver.track) {
+ transceiver.associatedRemoteMediaStreams.forEach(function(s) {
+ var nativeTrack = s.getTracks().find(function(t) {
+ return t.id === transceiver.rtpReceiver.track.id;
+ });
+ if (nativeTrack) {
+ removeTrackFromStreamAndFireEvent(nativeTrack, s);
+ }
+ });
+ transceiver.associatedRemoteMediaStreams = [];
+ }
+
+ transceiver.localCapabilities = localCapabilities;
+ transceiver.remoteCapabilities = remoteCapabilities;
+ transceiver.rtpReceiver = rtpReceiver;
+ transceiver.rtcpParameters = rtcpParameters;
+ transceiver.sendEncodingParameters = sendEncodingParameters;
+ transceiver.recvEncodingParameters = recvEncodingParameters;
+
+ // Start the RTCRtpReceiver now. The RTPSender is started in
+ // setLocalDescription.
+ pc._transceive(pc.transceivers[sdpMLineIndex],
+ false,
+ isNewTrack);
+ } else if (description.type === 'answer' && !rejected) {
+ transceiver = pc.transceivers[sdpMLineIndex];
+ iceGatherer = transceiver.iceGatherer;
+ iceTransport = transceiver.iceTransport;
+ dtlsTransport = transceiver.dtlsTransport;
+ rtpReceiver = transceiver.rtpReceiver;
+ sendEncodingParameters = transceiver.sendEncodingParameters;
+ localCapabilities = transceiver.localCapabilities;
+
+ pc.transceivers[sdpMLineIndex].recvEncodingParameters =
+ recvEncodingParameters;
+ pc.transceivers[sdpMLineIndex].remoteCapabilities =
+ remoteCapabilities;
+ pc.transceivers[sdpMLineIndex].rtcpParameters = rtcpParameters;
+
+ if (cands.length && iceTransport.state === 'new') {
+ if ((isIceLite || isComplete) &&
+ (!usingBundle || sdpMLineIndex === 0)) {
+ iceTransport.setRemoteCandidates(cands);
+ } else {
+ cands.forEach(function(candidate) {
+ maybeAddCandidate(transceiver.iceTransport, candidate);
+ });
+ }
+ }
+
+ if (!usingBundle || sdpMLineIndex === 0) {
+ if (iceTransport.state === 'new') {
+ iceTransport.start(iceGatherer, remoteIceParameters,
+ 'controlling');
+ }
+ if (dtlsTransport.state === 'new') {
+ dtlsTransport.start(remoteDtlsParameters);
+ }
+ }
+
+ pc._transceive(transceiver,
+ direction === 'sendrecv' || direction === 'recvonly',
+ direction === 'sendrecv' || direction === 'sendonly');
+
+ // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams
+ if (rtpReceiver &&
+ (direction === 'sendrecv' || direction === 'sendonly')) {
+ track = rtpReceiver.track;
+ if (remoteMsid) {
+ if (!streams[remoteMsid.stream]) {
+ streams[remoteMsid.stream] = new window.MediaStream();
+ }
+ addTrackToStreamAndFireEvent(track, streams[remoteMsid.stream]);
+ receiverList.push([track, rtpReceiver, streams[remoteMsid.stream]]);
+ } else {
+ if (!streams.default) {
+ streams.default = new window.MediaStream();
+ }
+ addTrackToStreamAndFireEvent(track, streams.default);
+ receiverList.push([track, rtpReceiver, streams.default]);
+ }
+ } else {
+ // FIXME: actually the receiver should be created later.
+ delete transceiver.rtpReceiver;
+ }
+ }
+ });
+
+ if (pc._dtlsRole === undefined) {
+ pc._dtlsRole = description.type === 'offer' ? 'active' : 'passive';
+ }
+
+ pc.remoteDescription = {
+ type: description.type,
+ sdp: description.sdp
+ };
+ if (description.type === 'offer') {
+ pc._updateSignalingState('have-remote-offer');
+ } else {
+ pc._updateSignalingState('stable');
+ }
+ Object.keys(streams).forEach(function(sid) {
+ var stream = streams[sid];
+ if (stream.getTracks().length) {
+ if (pc.remoteStreams.indexOf(stream) === -1) {
+ pc.remoteStreams.push(stream);
+ var event = new Event('addstream');
+ event.stream = stream;
+ window.setTimeout(function() {
+ pc._dispatchEvent('addstream', event);
+ });
+ }
+
+ receiverList.forEach(function(item) {
+ var track = item[0];
+ var receiver = item[1];
+ if (stream.id !== item[2].id) {
+ return;
+ }
+ fireAddTrack(pc, track, receiver, [stream]);
+ });
+ }
+ });
+ receiverList.forEach(function(item) {
+ if (item[2]) {
+ return;
+ }
+ fireAddTrack(pc, item[0], item[1], []);
+ });
+
+ // check whether addIceCandidate({}) was called within four seconds after
+ // setRemoteDescription.
+ window.setTimeout(function() {
+ if (!(pc && pc.transceivers)) {
+ return;
+ }
+ pc.transceivers.forEach(function(transceiver) {
+ if (transceiver.iceTransport &&
+ transceiver.iceTransport.state === 'new' &&
+ transceiver.iceTransport.getRemoteCandidates().length > 0) {
+ console.warn('Timeout for addRemoteCandidate. Consider sending ' +
+ 'an end-of-candidates notification');
+ transceiver.iceTransport.addRemoteCandidate({});
+ }
+ });
+ }, 4000);
+
+ return Promise.resolve();
+ };
+
+ RTCPeerConnection.prototype.close = function() {
+ this.transceivers.forEach(function(transceiver) {
+ /* not yet
+if (transceiver.iceGatherer) {
+transceiver.iceGatherer.close();
+}
+*/
+ if (transceiver.iceTransport) {
+ transceiver.iceTransport.stop();
+ }
+ if (transceiver.dtlsTransport) {
+ transceiver.dtlsTransport.stop();
+ }
+ if (transceiver.rtpSender) {
+ transceiver.rtpSender.stop();
+ }
+ if (transceiver.rtpReceiver) {
+ transceiver.rtpReceiver.stop();
+ }
+ });
+ // FIXME: clean up tracks, local streams, remote streams, etc
+ this._isClosed = true;
+ this._updateSignalingState('closed');
+ };
+
+ // Update the signaling state.
+ RTCPeerConnection.prototype._updateSignalingState = function(newState) {
+ this.signalingState = newState;
+ var event = new Event('signalingstatechange');
+ this._dispatchEvent('signalingstatechange', event);
+ };
+
+ // Determine whether to fire the negotiationneeded event.
+ RTCPeerConnection.prototype._maybeFireNegotiationNeeded = function() {
+ var pc = this;
+ if (this.signalingState !== 'stable' || this.needNegotiation === true) {
+ return;
+ }
+ this.needNegotiation = true;
+ window.setTimeout(function() {
+ if (pc.needNegotiation) {
+ pc.needNegotiation = false;
+ var event = new Event('negotiationneeded');
+ pc._dispatchEvent('negotiationneeded', event);
+ }
+ }, 0);
+ };
+
+ // Update the ice connection state.
+ RTCPeerConnection.prototype._updateIceConnectionState = function() {
+ var newState;
+ var states = {
+ 'new': 0,
+ closed: 0,
+ checking: 0,
+ connected: 0,
+ completed: 0,
+ disconnected: 0,
+ failed: 0
+ };
+ this.transceivers.forEach(function(transceiver) {
+ states[transceiver.iceTransport.state]++;
+ });
+
+ newState = 'new';
+ if (states.failed > 0) {
+ newState = 'failed';
+ } else if (states.checking > 0) {
+ newState = 'checking';
+ } else if (states.disconnected > 0) {
+ newState = 'disconnected';
+ } else if (states.new > 0) {
+ newState = 'new';
+ } else if (states.connected > 0) {
+ newState = 'connected';
+ } else if (states.completed > 0) {
+ newState = 'completed';
+ }
+
+ if (newState !== this.iceConnectionState) {
+ this.iceConnectionState = newState;
+ var event = new Event('iceconnectionstatechange');
+ this._dispatchEvent('iceconnectionstatechange', event);
+ }
+ };
+
+ // Update the connection state.
+ RTCPeerConnection.prototype._updateConnectionState = function() {
+ var newState;
+ var states = {
+ 'new': 0,
+ closed: 0,
+ connecting: 0,
+ connected: 0,
+ completed: 0,
+ disconnected: 0,
+ failed: 0
+ };
+ this.transceivers.forEach(function(transceiver) {
+ states[transceiver.iceTransport.state]++;
+ states[transceiver.dtlsTransport.state]++;
+ });
+ // ICETransport.completed and connected are the same for this purpose.
+ states.connected += states.completed;
+
+ newState = 'new';
+ if (states.failed > 0) {
+ newState = 'failed';
+ } else if (states.connecting > 0) {
+ newState = 'connecting';
+ } else if (states.disconnected > 0) {
+ newState = 'disconnected';
+ } else if (states.new > 0) {
+ newState = 'new';
+ } else if (states.connected > 0) {
+ newState = 'connected';
+ }
+
+ if (newState !== this.connectionState) {
+ this.connectionState = newState;
+ var event = new Event('connectionstatechange');
+ this._dispatchEvent('connectionstatechange', event);
+ }
+ };
+
+ RTCPeerConnection.prototype.createOffer = function() {
+ var pc = this;
+
+ if (pc._isClosed) {
+ return Promise.reject(makeError('InvalidStateError',
+ 'Can not call createOffer after close'));
+ }
+
+ var numAudioTracks = pc.transceivers.filter(function(t) {
+ return t.kind === 'audio';
+ }).length;
+ var numVideoTracks = pc.transceivers.filter(function(t) {
+ return t.kind === 'video';
+ }).length;
+
+ // Determine number of audio and video tracks we need to send/recv.
+ var offerOptions = arguments[0];
+ if (offerOptions) {
+ // Reject Chrome legacy constraints.
+ if (offerOptions.mandatory || offerOptions.optional) {
+ throw new TypeError(
+ 'Legacy mandatory/optional constraints not supported.');
+ }
+ if (offerOptions.offerToReceiveAudio !== undefined) {
+ if (offerOptions.offerToReceiveAudio === true) {
+ numAudioTracks = 1;
+ } else if (offerOptions.offerToReceiveAudio === false) {
+ numAudioTracks = 0;
+ } else {
+ numAudioTracks = offerOptions.offerToReceiveAudio;
+ }
+ }
+ if (offerOptions.offerToReceiveVideo !== undefined) {
+ if (offerOptions.offerToReceiveVideo === true) {
+ numVideoTracks = 1;
+ } else if (offerOptions.offerToReceiveVideo === false) {
+ numVideoTracks = 0;
+ } else {
+ numVideoTracks = offerOptions.offerToReceiveVideo;
+ }
+ }
+ }
+
+ pc.transceivers.forEach(function(transceiver) {
+ if (transceiver.kind === 'audio') {
+ numAudioTracks--;
+ if (numAudioTracks < 0) {
+ transceiver.wantReceive = false;
+ }
+ } else if (transceiver.kind === 'video') {
+ numVideoTracks--;
+ if (numVideoTracks < 0) {
+ transceiver.wantReceive = false;
+ }
+ }
+ });
+
+ // Create M-lines for recvonly streams.
+ while (numAudioTracks > 0 || numVideoTracks > 0) {
+ if (numAudioTracks > 0) {
+ pc._createTransceiver('audio');
+ numAudioTracks--;
+ }
+ if (numVideoTracks > 0) {
+ pc._createTransceiver('video');
+ numVideoTracks--;
+ }
+ }
+
+ var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId,
+ pc._sdpSessionVersion++);
+ pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {
+ // For each track, create an ice gatherer, ice transport,
+ // dtls transport, potentially rtpsender and rtpreceiver.
+ var track = transceiver.track;
+ var kind = transceiver.kind;
+ var mid = transceiver.mid || SDPUtils.generateIdentifier();
+ transceiver.mid = mid;
+
+ if (!transceiver.iceGatherer) {
+ transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex,
+ pc.usingBundle);
+ }
+
+ var localCapabilities = window.RTCRtpSender.getCapabilities(kind);
+ // filter RTX until additional stuff needed for RTX is implemented
+ // in adapter.js
+ if (edgeVersion < 15019) {
+ localCapabilities.codecs = localCapabilities.codecs.filter(
+ function(codec) {
+ return codec.name !== 'rtx';
+ });
+ }
+ localCapabilities.codecs.forEach(function(codec) {
+ // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552
+ // by adding level-asymmetry-allowed=1
+ if (codec.name === 'H264' &&
+ codec.parameters['level-asymmetry-allowed'] === undefined) {
+ codec.parameters['level-asymmetry-allowed'] = '1';
+ }
+
+ // for subsequent offers, we might have to re-use the payload
+ // type of the last offer.
+ if (transceiver.remoteCapabilities &&
+ transceiver.remoteCapabilities.codecs) {
+ transceiver.remoteCapabilities.codecs.forEach(function(remoteCodec) {
+ if (codec.name.toLowerCase() === remoteCodec.name.toLowerCase() &&
+ codec.clockRate === remoteCodec.clockRate) {
+ codec.preferredPayloadType = remoteCodec.payloadType;
+ }
+ });
+ }
+ });
+ localCapabilities.headerExtensions.forEach(function(hdrExt) {
+ var remoteExtensions = transceiver.remoteCapabilities &&
+ transceiver.remoteCapabilities.headerExtensions || [];
+ remoteExtensions.forEach(function(rHdrExt) {
+ if (hdrExt.uri === rHdrExt.uri) {
+ hdrExt.id = rHdrExt.id;
+ }
+ });
+ });
+
+ // generate an ssrc now, to be used later in rtpSender.send
+ var sendEncodingParameters = transceiver.sendEncodingParameters || [{
+ ssrc: (2 * sdpMLineIndex + 1) * 1001
+ }];
+ if (track) {
+ // add RTX
+ if (edgeVersion >= 15019 && kind === 'video' &&
+ !sendEncodingParameters[0].rtx) {
+ sendEncodingParameters[0].rtx = {
+ ssrc: sendEncodingParameters[0].ssrc + 1
+ };
+ }
+ }
+
+ if (transceiver.wantReceive) {
+ transceiver.rtpReceiver = new window.RTCRtpReceiver(
+ transceiver.dtlsTransport, kind);
+ }
+
+ transceiver.localCapabilities = localCapabilities;
+ transceiver.sendEncodingParameters = sendEncodingParameters;
+ });
+
+ // always offer BUNDLE and dispose on return if not supported.
+ if (pc._config.bundlePolicy !== 'max-compat') {
+ sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function(t) {
+ return t.mid;
+ }).join(' ') + '\r\n';
+ }
+ sdp += 'a=ice-options:trickle\r\n';
+
+ pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {
+ sdp += writeMediaSection(transceiver, transceiver.localCapabilities,
+ 'offer', transceiver.stream, pc._dtlsRole);
+ sdp += 'a=rtcp-rsize\r\n';
+
+ if (transceiver.iceGatherer && pc.iceGatheringState !== 'new' &&
+ (sdpMLineIndex === 0 || !pc.usingBundle)) {
+ transceiver.iceGatherer.getLocalCandidates().forEach(function(cand) {
+ cand.component = 1;
+ sdp += 'a=' + SDPUtils.writeCandidate(cand) + '\r\n';
+ });
+
+ if (transceiver.iceGatherer.state === 'completed') {
+ sdp += 'a=end-of-candidates\r\n';
+ }
+ }
+ });
+
+ var desc = new window.RTCSessionDescription({
+ type: 'offer',
+ sdp: sdp
+ });
+ return Promise.resolve(desc);
+ };
+
+ RTCPeerConnection.prototype.createAnswer = function() {
+ var pc = this;
+
+ if (pc._isClosed) {
+ return Promise.reject(makeError('InvalidStateError',
+ 'Can not call createAnswer after close'));
+ }
+
+ if (!(pc.signalingState === 'have-remote-offer' ||
+ pc.signalingState === 'have-local-pranswer')) {
+ return Promise.reject(makeError('InvalidStateError',
+ 'Can not call createAnswer in signalingState ' + pc.signalingState));
+ }
+
+ var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId,
+ pc._sdpSessionVersion++);
+ if (pc.usingBundle) {
+ sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function(t) {
+ return t.mid;
+ }).join(' ') + '\r\n';
+ }
+ var mediaSectionsInOffer = SDPUtils.getMediaSections(
+ pc.remoteDescription.sdp).length;
+ pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {
+ if (sdpMLineIndex + 1 > mediaSectionsInOffer) {
+ return;
+ }
+ if (transceiver.rejected) {
+ if (transceiver.kind === 'application') {
+ sdp += 'm=application 0 DTLS/SCTP 5000\r\n';
+ } else if (transceiver.kind === 'audio') {
+ sdp += 'm=audio 0 UDP/TLS/RTP/SAVPF 0\r\n' +
+ 'a=rtpmap:0 PCMU/8000\r\n';
+ } else if (transceiver.kind === 'video') {
+ sdp += 'm=video 0 UDP/TLS/RTP/SAVPF 120\r\n' +
+ 'a=rtpmap:120 VP8/90000\r\n';
+ }
+ sdp += 'c=IN IP4 0.0.0.0\r\n' +
+ 'a=inactive\r\n' +
+ 'a=mid:' + transceiver.mid + '\r\n';
+ return;
+ }
+
+ // FIXME: look at direction.
+ if (transceiver.stream) {
+ var localTrack;
+ if (transceiver.kind === 'audio') {
+ localTrack = transceiver.stream.getAudioTracks()[0];
+ } else if (transceiver.kind === 'video') {
+ localTrack = transceiver.stream.getVideoTracks()[0];
+ }
+ if (localTrack) {
+ // add RTX
+ if (edgeVersion >= 15019 && transceiver.kind === 'video' &&
+ !transceiver.sendEncodingParameters[0].rtx) {
+ transceiver.sendEncodingParameters[0].rtx = {
+ ssrc: transceiver.sendEncodingParameters[0].ssrc + 1
+ };
+ }
+ }
+ }
+
+ // Calculate intersection of capabilities.
+ var commonCapabilities = getCommonCapabilities(
+ transceiver.localCapabilities,
+ transceiver.remoteCapabilities);
+
+ var hasRtx = commonCapabilities.codecs.filter(function(c) {
+ return c.name.toLowerCase() === 'rtx';
+ }).length;
+ if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) {
+ delete transceiver.sendEncodingParameters[0].rtx;
+ }
+
+ sdp += writeMediaSection(transceiver, commonCapabilities,
+ 'answer', transceiver.stream, pc._dtlsRole);
+ if (transceiver.rtcpParameters &&
+ transceiver.rtcpParameters.reducedSize) {
+ sdp += 'a=rtcp-rsize\r\n';
+ }
+ });
+
+ var desc = new window.RTCSessionDescription({
+ type: 'answer',
+ sdp: sdp
+ });
+ return Promise.resolve(desc);
+ };
+
+ RTCPeerConnection.prototype.addIceCandidate = function(candidate) {
+ var pc = this;
+ var sections;
+ if (candidate && !(candidate.sdpMLineIndex !== undefined ||
+ candidate.sdpMid)) {
+ return Promise.reject(new TypeError('sdpMLineIndex or sdpMid required'));
+ }
+
+ // TODO: needs to go into ops queue.
+ return new Promise(function(resolve, reject) {
+ if (!pc.remoteDescription) {
+ return reject(makeError('InvalidStateError',
+ 'Can not add ICE candidate without a remote description'));
+ } else if (!candidate || candidate.candidate === '') {
+ for (var j = 0; j < pc.transceivers.length; j++) {
+ if (pc.transceivers[j].rejected) {
+ continue;
+ }
+ pc.transceivers[j].iceTransport.addRemoteCandidate({});
+ sections = SDPUtils.getMediaSections(pc.remoteDescription.sdp);
+ sections[j] += 'a=end-of-candidates\r\n';
+ pc.remoteDescription.sdp =
+ SDPUtils.getDescription(pc.remoteDescription.sdp) +
+ sections.join('');
+ if (pc.usingBundle) {
+ break;
+ }
+ }
+ } else {
+ var sdpMLineIndex = candidate.sdpMLineIndex;
+ if (candidate.sdpMid) {
+ for (var i = 0; i < pc.transceivers.length; i++) {
+ if (pc.transceivers[i].mid === candidate.sdpMid) {
+ sdpMLineIndex = i;
+ break;
+ }
+ }
+ }
+ var transceiver = pc.transceivers[sdpMLineIndex];
+ if (transceiver) {
+ if (transceiver.rejected) {
+ return resolve();
+ }
+ var cand = Object.keys(candidate.candidate).length > 0 ?
+ SDPUtils.parseCandidate(candidate.candidate) : {};
+ // Ignore Chrome's invalid candidates since Edge does not like them.
+ if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) {
+ return resolve();
+ }
+ // Ignore RTCP candidates, we assume RTCP-MUX.
+ if (cand.component && cand.component !== 1) {
+ return resolve();
+ }
+ // when using bundle, avoid adding candidates to the wrong
+ // ice transport. And avoid adding candidates added in the SDP.
+ if (sdpMLineIndex === 0 || (sdpMLineIndex > 0 &&
+ transceiver.iceTransport !== pc.transceivers[0].iceTransport)) {
+ if (!maybeAddCandidate(transceiver.iceTransport, cand)) {
+ return reject(makeError('OperationError',
+ 'Can not add ICE candidate'));
+ }
+ }
+
+ // update the remoteDescription.
+ var candidateString = candidate.candidate.trim();
+ if (candidateString.indexOf('a=') === 0) {
+ candidateString = candidateString.substr(2);
+ }
+ sections = SDPUtils.getMediaSections(pc.remoteDescription.sdp);
+ sections[sdpMLineIndex] += 'a=' +
+ (cand.type ? candidateString : 'end-of-candidates')
+ + '\r\n';
+ pc.remoteDescription.sdp =
+ SDPUtils.getDescription(pc.remoteDescription.sdp) +
+ sections.join('');
+ } else {
+ return reject(makeError('OperationError',
+ 'Can not add ICE candidate'));
+ }
+ }
+ resolve();
+ });
+ };
+
+ RTCPeerConnection.prototype.getStats = function() {
+ var promises = [];
+ this.transceivers.forEach(function(transceiver) {
+ ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',
+ 'dtlsTransport'].forEach(function(method) {
+ if (transceiver[method]) {
+ promises.push(transceiver[method].getStats());
+ }
+ });
+ });
+ var fixStatsType = function(stat) {
+ return {
+ inboundrtp: 'inbound-rtp',
+ outboundrtp: 'outbound-rtp',
+ candidatepair: 'candidate-pair',
+ localcandidate: 'local-candidate',
+ remotecandidate: 'remote-candidate'
+ }[stat.type] || stat.type;
+ };
+ return new Promise(function(resolve) {
+ // shim getStats with maplike support
+ var results = new Map();
+ Promise.all(promises).then(function(res) {
+ res.forEach(function(result) {
+ Object.keys(result).forEach(function(id) {
+ result[id].type = fixStatsType(result[id]);
+ results.set(id, result[id]);
+ });
+ });
+ resolve(results);
+ });
+ });
+ };
+
+ // legacy callback shims. Should be moved to adapter.js some days.
+ var methods = ['createOffer', 'createAnswer'];
+ methods.forEach(function(method) {
+ var nativeMethod = RTCPeerConnection.prototype[method];
+ RTCPeerConnection.prototype[method] = function() {
+ var args = arguments;
+ if (typeof args[0] === 'function' ||
+ typeof args[1] === 'function') { // legacy
+ return nativeMethod.apply(this, [arguments[2]])
+ .then(function(description) {
+ if (typeof args[0] === 'function') {
+ args[0].apply(null, [description]);
+ }
+ }, function(error) {
+ if (typeof args[1] === 'function') {
+ args[1].apply(null, [error]);
+ }
+ });
+ }
+ return nativeMethod.apply(this, arguments);
+ };
+ });
+
+ methods = ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'];
+ methods.forEach(function(method) {
+ var nativeMethod = RTCPeerConnection.prototype[method];
+ RTCPeerConnection.prototype[method] = function() {
+ var args = arguments;
+ if (typeof args[1] === 'function' ||
+ typeof args[2] === 'function') { // legacy
+ return nativeMethod.apply(this, arguments)
+ .then(function() {
+ if (typeof args[1] === 'function') {
+ args[1].apply(null);
+ }
+ }, function(error) {
+ if (typeof args[2] === 'function') {
+ args[2].apply(null, [error]);
+ }
+ });
+ }
+ return nativeMethod.apply(this, arguments);
+ };
+ });
+
+ // getStats is special. It doesn't have a spec legacy method yet we support
+ // getStats(something, cb) without error callbacks.
+ ['getStats'].forEach(function(method) {
+ var nativeMethod = RTCPeerConnection.prototype[method];
+ RTCPeerConnection.prototype[method] = function() {
+ var args = arguments;
+ if (typeof args[1] === 'function') {
+ return nativeMethod.apply(this, arguments)
+ .then(function() {
+ if (typeof args[1] === 'function') {
+ args[1].apply(null);
+ }
+ });
+ }
+ return nativeMethod.apply(this, arguments);
+ };
+ });
+
+ return RTCPeerConnection;
+};
+
+},{"sdp":2}],2:[function(require,module,exports){
+/* eslint-env node */
+'use strict';
+
+// SDP helpers.
+var SDPUtils = {};
+
+// Generate an alphanumeric identifier for cname or mids.
+// TODO: use UUIDs instead? https://gist.github.com/jed/982883
+SDPUtils.generateIdentifier = function() {
+ return Math.random().toString(36).substr(2, 10);
+};
+
+// The RTCP CNAME used by all peerconnections from the same JS.
+SDPUtils.localCName = SDPUtils.generateIdentifier();
+
+// Splits SDP into lines, dealing with both CRLF and LF.
+SDPUtils.splitLines = function(blob) {
+ return blob.trim().split('\n').map(function(line) {
+ return line.trim();
+ });
+};
+// Splits SDP into sessionpart and mediasections. Ensures CRLF.
+SDPUtils.splitSections = function(blob) {
+ var parts = blob.split('\nm=');
+ return parts.map(function(part, index) {
+ return (index > 0 ? 'm=' + part : part).trim() + '\r\n';
+ });
+};
+
+// returns the session description.
+SDPUtils.getDescription = function(blob) {
+ var sections = SDPUtils.splitSections(blob);
+ return sections && sections[0];
+};
+
+// returns the individual media sections.
+SDPUtils.getMediaSections = function(blob) {
+ var sections = SDPUtils.splitSections(blob);
+ sections.shift();
+ return sections;
+};
+
+// Returns lines that start with a certain prefix.
+SDPUtils.matchPrefix = function(blob, prefix) {
+ return SDPUtils.splitLines(blob).filter(function(line) {
+ return line.indexOf(prefix) === 0;
+ });
+};
+
+// Parses an ICE candidate line. Sample input:
+// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8
+// rport 55996"
+SDPUtils.parseCandidate = function(line) {
+ var parts;
+ // Parse both variants.
+ if (line.indexOf('a=candidate:') === 0) {
+ parts = line.substring(12).split(' ');
+ } else {
+ parts = line.substring(10).split(' ');
+ }
+
+ var candidate = {
+ foundation: parts[0],
+ component: parseInt(parts[1], 10),
+ protocol: parts[2].toLowerCase(),
+ priority: parseInt(parts[3], 10),
+ ip: parts[4],
+ port: parseInt(parts[5], 10),
+ // skip parts[6] == 'typ'
+ type: parts[7]
+ };
+
+ for (var i = 8; i < parts.length; i += 2) {
+ switch (parts[i]) {
+ case 'raddr':
+ candidate.relatedAddress = parts[i + 1];
+ break;
+ case 'rport':
+ candidate.relatedPort = parseInt(parts[i + 1], 10);
+ break;
+ case 'tcptype':
+ candidate.tcpType = parts[i + 1];
+ break;
+ case 'ufrag':
+ candidate.ufrag = parts[i + 1]; // for backward compability.
+ candidate.usernameFragment = parts[i + 1];
+ break;
+ default: // extension handling, in particular ufrag
+ candidate[parts[i]] = parts[i + 1];
+ break;
+ }
+ }
+ return candidate;
+};
+
+// Translates a candidate object into SDP candidate attribute.
+SDPUtils.writeCandidate = function(candidate) {
+ var sdp = [];
+ sdp.push(candidate.foundation);
+ sdp.push(candidate.component);
+ sdp.push(candidate.protocol.toUpperCase());
+ sdp.push(candidate.priority);
+ sdp.push(candidate.ip);
+ sdp.push(candidate.port);
+
+ var type = candidate.type;
+ sdp.push('typ');
+ sdp.push(type);
+ if (type !== 'host' && candidate.relatedAddress &&
+ candidate.relatedPort) {
+ sdp.push('raddr');
+ sdp.push(candidate.relatedAddress); // was: relAddr
+ sdp.push('rport');
+ sdp.push(candidate.relatedPort); // was: relPort
+ }
+ if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {
+ sdp.push('tcptype');
+ sdp.push(candidate.tcpType);
+ }
+ if (candidate.usernameFragment || candidate.ufrag) {
+ sdp.push('ufrag');
+ sdp.push(candidate.usernameFragment || candidate.ufrag);
+ }
+ return 'candidate:' + sdp.join(' ');
+};
+
+// Parses an ice-options line, returns an array of option tags.
+// a=ice-options:foo bar
+SDPUtils.parseIceOptions = function(line) {
+ return line.substr(14).split(' ');
+}
+
+// Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input:
+// a=rtpmap:111 opus/48000/2
+SDPUtils.parseRtpMap = function(line) {
+ var parts = line.substr(9).split(' ');
+ var parsed = {
+ payloadType: parseInt(parts.shift(), 10) // was: id
+ };
+
+ parts = parts[0].split('/');
+
+ parsed.name = parts[0];
+ parsed.clockRate = parseInt(parts[1], 10); // was: clockrate
+ // was: channels
+ parsed.numChannels = parts.length === 3 ? parseInt(parts[2], 10) : 1;
+ return parsed;
+};
+
+// Generate an a=rtpmap line from RTCRtpCodecCapability or
+// RTCRtpCodecParameters.
+SDPUtils.writeRtpMap = function(codec) {
+ var pt = codec.payloadType;
+ if (codec.preferredPayloadType !== undefined) {
+ pt = codec.preferredPayloadType;
+ }
+ return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate +
+ (codec.numChannels !== 1 ? '/' + codec.numChannels : '') + '\r\n';
+};
+
+// Parses an a=extmap line (headerextension from RFC 5285). Sample input:
+// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset
+// a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset
+SDPUtils.parseExtmap = function(line) {
+ var parts = line.substr(9).split(' ');
+ return {
+ id: parseInt(parts[0], 10),
+ direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv',
+ uri: parts[1]
+ };
+};
+
+// Generates a=extmap line from RTCRtpHeaderExtensionParameters or
+// RTCRtpHeaderExtension.
+SDPUtils.writeExtmap = function(headerExtension) {
+ return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) +
+ (headerExtension.direction && headerExtension.direction !== 'sendrecv'
+ ? '/' + headerExtension.direction
+ : '') +
+ ' ' + headerExtension.uri + '\r\n';
+};
+
+// Parses an ftmp line, returns dictionary. Sample input:
+// a=fmtp:96 vbr=on;cng=on
+// Also deals with vbr=on; cng=on
+SDPUtils.parseFmtp = function(line) {
+ var parsed = {};
+ var kv;
+ var parts = line.substr(line.indexOf(' ') + 1).split(';');
+ for (var j = 0; j < parts.length; j++) {
+ kv = parts[j].trim().split('=');
+ parsed[kv[0].trim()] = kv[1];
+ }
+ return parsed;
+};
+
+// Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters.
+SDPUtils.writeFmtp = function(codec) {
+ var line = '';
+ var pt = codec.payloadType;
+ if (codec.preferredPayloadType !== undefined) {
+ pt = codec.preferredPayloadType;
+ }
+ if (codec.parameters && Object.keys(codec.parameters).length) {
+ var params = [];
+ Object.keys(codec.parameters).forEach(function(param) {
+ params.push(param + '=' + codec.parameters[param]);
+ });
+ line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\r\n';
+ }
+ return line;
+};
+
+// Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:
+// a=rtcp-fb:98 nack rpsi
+SDPUtils.parseRtcpFb = function(line) {
+ var parts = line.substr(line.indexOf(' ') + 1).split(' ');
+ return {
+ type: parts.shift(),
+ parameter: parts.join(' ')
+ };
+};
+// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.
+SDPUtils.writeRtcpFb = function(codec) {
+ var lines = '';
+ var pt = codec.payloadType;
+ if (codec.preferredPayloadType !== undefined) {
+ pt = codec.preferredPayloadType;
+ }
+ if (codec.rtcpFeedback && codec.rtcpFeedback.length) {
+ // FIXME: special handling for trr-int?
+ codec.rtcpFeedback.forEach(function(fb) {
+ lines += 'a=rtcp-fb:' + pt + ' ' + fb.type +
+ (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') +
+ '\r\n';
+ });
+ }
+ return lines;
+};
+
+// Parses an RFC 5576 ssrc media attribute. Sample input:
+// a=ssrc:3735928559 cname:something
+SDPUtils.parseSsrcMedia = function(line) {
+ var sp = line.indexOf(' ');
+ var parts = {
+ ssrc: parseInt(line.substr(7, sp - 7), 10)
+ };
+ var colon = line.indexOf(':', sp);
+ if (colon > -1) {
+ parts.attribute = line.substr(sp + 1, colon - sp - 1);
+ parts.value = line.substr(colon + 1);
+ } else {
+ parts.attribute = line.substr(sp + 1);
+ }
+ return parts;
+};
+
+// Extracts the MID (RFC 5888) from a media section.
+// returns the MID or undefined if no mid line was found.
+SDPUtils.getMid = function(mediaSection) {
+ var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0];
+ if (mid) {
+ return mid.substr(6);
+ }
+}
+
+SDPUtils.parseFingerprint = function(line) {
+ var parts = line.substr(14).split(' ');
+ return {
+ algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge.
+ value: parts[1]
+ };
+};
+
+// Extracts DTLS parameters from SDP media section or sessionpart.
+// FIXME: for consistency with other functions this should only
+// get the fingerprint line as input. See also getIceParameters.
+SDPUtils.getDtlsParameters = function(mediaSection, sessionpart) {
+ var lines = SDPUtils.matchPrefix(mediaSection + sessionpart,
+ 'a=fingerprint:');
+ // Note: a=setup line is ignored since we use the 'auto' role.
+ // Note2: 'algorithm' is not case sensitive except in Edge.
+ return {
+ role: 'auto',
+ fingerprints: lines.map(SDPUtils.parseFingerprint)
+ };
+};
+
+// Serializes DTLS parameters to SDP.
+SDPUtils.writeDtlsParameters = function(params, setupType) {
+ var sdp = 'a=setup:' + setupType + '\r\n';
+ params.fingerprints.forEach(function(fp) {
+ sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\r\n';
+ });
+ return sdp;
+};
+// Parses ICE information from SDP media section or sessionpart.
+// FIXME: for consistency with other functions this should only
+// get the ice-ufrag and ice-pwd lines as input.
+SDPUtils.getIceParameters = function(mediaSection, sessionpart) {
+ var lines = SDPUtils.splitLines(mediaSection);
+ // Search in session part, too.
+ lines = lines.concat(SDPUtils.splitLines(sessionpart));
+ var iceParameters = {
+ usernameFragment: lines.filter(function(line) {
+ return line.indexOf('a=ice-ufrag:') === 0;
+ })[0].substr(12),
+ password: lines.filter(function(line) {
+ return line.indexOf('a=ice-pwd:') === 0;
+ })[0].substr(10)
+ };
+ return iceParameters;
+};
+
+// Serializes ICE parameters to SDP.
+SDPUtils.writeIceParameters = function(params) {
+ return 'a=ice-ufrag:' + params.usernameFragment + '\r\n' +
+ 'a=ice-pwd:' + params.password + '\r\n';
+};
+
+// Parses the SDP media section and returns RTCRtpParameters.
+SDPUtils.parseRtpParameters = function(mediaSection) {
+ var description = {
+ codecs: [],
+ headerExtensions: [],
+ fecMechanisms: [],
+ rtcp: []
+ };
+ var lines = SDPUtils.splitLines(mediaSection);
+ var mline = lines[0].split(' ');
+ for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..]
+ var pt = mline[i];
+ var rtpmapline = SDPUtils.matchPrefix(
+ mediaSection, 'a=rtpmap:' + pt + ' ')[0];
+ if (rtpmapline) {
+ var codec = SDPUtils.parseRtpMap(rtpmapline);
+ var fmtps = SDPUtils.matchPrefix(
+ mediaSection, 'a=fmtp:' + pt + ' ');
+ // Only the first a=fmtp:<pt> is considered.
+ codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};
+ codec.rtcpFeedback = SDPUtils.matchPrefix(
+ mediaSection, 'a=rtcp-fb:' + pt + ' ')
+ .map(SDPUtils.parseRtcpFb);
+ description.codecs.push(codec);
+ // parse FEC mechanisms from rtpmap lines.
+ switch (codec.name.toUpperCase()) {
+ case 'RED':
+ case 'ULPFEC':
+ description.fecMechanisms.push(codec.name.toUpperCase());
+ break;
+ default: // only RED and ULPFEC are recognized as FEC mechanisms.
+ break;
+ }
+ }
+ }
+ SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) {
+ description.headerExtensions.push(SDPUtils.parseExtmap(line));
+ });
+ // FIXME: parse rtcp.
+ return description;
+};
+
+// Generates parts of the SDP media section describing the capabilities /
+// parameters.
+SDPUtils.writeRtpDescription = function(kind, caps) {
+ var sdp = '';
+
+ // Build the mline.
+ sdp += 'm=' + kind + ' ';
+ sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.
+ sdp += ' UDP/TLS/RTP/SAVPF ';
+ sdp += caps.codecs.map(function(codec) {
+ if (codec.preferredPayloadType !== undefined) {
+ return codec.preferredPayloadType;
+ }
+ return codec.payloadType;
+ }).join(' ') + '\r\n';
+
+ sdp += 'c=IN IP4 0.0.0.0\r\n';
+ sdp += 'a=rtcp:9 IN IP4 0.0.0.0\r\n';
+
+ // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.
+ caps.codecs.forEach(function(codec) {
+ sdp += SDPUtils.writeRtpMap(codec);
+ sdp += SDPUtils.writeFmtp(codec);
+ sdp += SDPUtils.writeRtcpFb(codec);
+ });
+ var maxptime = 0;
+ caps.codecs.forEach(function(codec) {
+ if (codec.maxptime > maxptime) {
+ maxptime = codec.maxptime;
+ }
+ });
+ if (maxptime > 0) {
+ sdp += 'a=maxptime:' + maxptime + '\r\n';
+ }
+ sdp += 'a=rtcp-mux\r\n';
+
+ caps.headerExtensions.forEach(function(extension) {
+ sdp += SDPUtils.writeExtmap(extension);
+ });
+ // FIXME: write fecMechanisms.
+ return sdp;
+};
+
+// Parses the SDP media section and returns an array of
+// RTCRtpEncodingParameters.
+SDPUtils.parseRtpEncodingParameters = function(mediaSection) {
+ var encodingParameters = [];
+ var description = SDPUtils.parseRtpParameters(mediaSection);
+ var hasRed = description.fecMechanisms.indexOf('RED') !== -1;
+ var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;
+
+ // filter a=ssrc:... cname:, ignore PlanB-msid
+ var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')
+ .map(function(line) {
+ return SDPUtils.parseSsrcMedia(line);
+ })
+ .filter(function(parts) {
+ return parts.attribute === 'cname';
+ });
+ var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;
+ var secondarySsrc;
+
+ var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID')
+ .map(function(line) {
+ var parts = line.split(' ');
+ parts.shift();
+ return parts.map(function(part) {
+ return parseInt(part, 10);
+ });
+ });
+ if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {
+ secondarySsrc = flows[0][1];
+ }
+
+ description.codecs.forEach(function(codec) {
+ if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {
+ var encParam = {
+ ssrc: primarySsrc,
+ codecPayloadType: parseInt(codec.parameters.apt, 10),
+ rtx: {
+ ssrc: secondarySsrc
+ }
+ };
+ encodingParameters.push(encParam);
+ if (hasRed) {
+ encParam = JSON.parse(JSON.stringify(encParam));
+ encParam.fec = {
+ ssrc: secondarySsrc,
+ mechanism: hasUlpfec ? 'red+ulpfec' : 'red'
+ };
+ encodingParameters.push(encParam);
+ }
+ }
+ });
+ if (encodingParameters.length === 0 && primarySsrc) {
+ encodingParameters.push({
+ ssrc: primarySsrc
+ });
+ }
+
+ // we support both b=AS and b=TIAS but interpret AS as TIAS.
+ var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');
+ if (bandwidth.length) {
+ if (bandwidth[0].indexOf('b=TIAS:') === 0) {
+ bandwidth = parseInt(bandwidth[0].substr(7), 10);
+ } else if (bandwidth[0].indexOf('b=AS:') === 0) {
+ // use formula from JSEP to convert b=AS to TIAS value.
+ bandwidth = parseInt(bandwidth[0].substr(5), 10) * 1000 * 0.95
+ - (50 * 40 * 8);
+ } else {
+ bandwidth = undefined;
+ }
+ encodingParameters.forEach(function(params) {
+ params.maxBitrate = bandwidth;
+ });
+ }
+ return encodingParameters;
+};
+
+// parses http://draft.ortc.org/#rtcrtcpparameters*
+SDPUtils.parseRtcpParameters = function(mediaSection) {
+ var rtcpParameters = {};
+
+ var cname;
+ // Gets the first SSRC. Note that with RTX there might be multiple
+ // SSRCs.
+ var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')
+ .map(function(line) {
+ return SDPUtils.parseSsrcMedia(line);
+ })
+ .filter(function(obj) {
+ return obj.attribute === 'cname';
+ })[0];
+ if (remoteSsrc) {
+ rtcpParameters.cname = remoteSsrc.value;
+ rtcpParameters.ssrc = remoteSsrc.ssrc;
+ }
+
+ // Edge uses the compound attribute instead of reducedSize
+ // compound is !reducedSize
+ var rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize');
+ rtcpParameters.reducedSize = rsize.length > 0;
+ rtcpParameters.compound = rsize.length === 0;
+
+ // parses the rtcp-mux attrÑ–bute.
+ // Note that Edge does not support unmuxed RTCP.
+ var mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux');
+ rtcpParameters.mux = mux.length > 0;
+
+ return rtcpParameters;
+};
+
+// parses either a=msid: or a=ssrc:... msid lines and returns
+// the id of the MediaStream and MediaStreamTrack.
+SDPUtils.parseMsid = function(mediaSection) {
+ var parts;
+ var spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:');
+ if (spec.length === 1) {
+ parts = spec[0].substr(7).split(' ');
+ return {stream: parts[0], track: parts[1]};
+ }
+ var planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')
+ .map(function(line) {
+ return SDPUtils.parseSsrcMedia(line);
+ })
+ .filter(function(parts) {
+ return parts.attribute === 'msid';
+ });
+ if (planB.length > 0) {
+ parts = planB[0].value.split(' ');
+ return {stream: parts[0], track: parts[1]};
+ }
+};
+
+// Generate a session ID for SDP.
+// https://tools.ietf.org/html/draft-ietf-rtcweb-jsep-20#section-5.2.1
+// recommends using a cryptographically random +ve 64-bit value
+// but right now this should be acceptable and within the right range
+SDPUtils.generateSessionId = function() {
+ return Math.random().toString().substr(2, 21);
+};
+
+// Write boilder plate for start of SDP
+// sessId argument is optional - if not supplied it will
+// be generated randomly
+// sessVersion is optional and defaults to 2
+SDPUtils.writeSessionBoilerplate = function(sessId, sessVer) {
+ var sessionId;
+ var version = sessVer !== undefined ? sessVer : 2;
+ if (sessId) {
+ sessionId = sessId;
+ } else {
+ sessionId = SDPUtils.generateSessionId();
+ }
+ // FIXME: sess-id should be an NTP timestamp.
+ return 'v=0\r\n' +
+ 'o=thisisadapterortc ' + sessionId + ' ' + version + ' IN IP4 127.0.0.1\r\n' +
+ 's=-\r\n' +
+ 't=0 0\r\n';
+};
+
+SDPUtils.writeMediaSection = function(transceiver, caps, type, stream) {
+ var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);
+
+ // Map ICE parameters (ufrag, pwd) to SDP.
+ sdp += SDPUtils.writeIceParameters(
+ transceiver.iceGatherer.getLocalParameters());
+
+ // Map DTLS parameters to SDP.
+ sdp += SDPUtils.writeDtlsParameters(
+ transceiver.dtlsTransport.getLocalParameters(),
+ type === 'offer' ? 'actpass' : 'active');
+
+ sdp += 'a=mid:' + transceiver.mid + '\r\n';
+
+ if (transceiver.direction) {
+ sdp += 'a=' + transceiver.direction + '\r\n';
+ } else if (transceiver.rtpSender && transceiver.rtpReceiver) {
+ sdp += 'a=sendrecv\r\n';
+ } else if (transceiver.rtpSender) {
+ sdp += 'a=sendonly\r\n';
+ } else if (transceiver.rtpReceiver) {
+ sdp += 'a=recvonly\r\n';
+ } else {
+ sdp += 'a=inactive\r\n';
+ }
+
+ if (transceiver.rtpSender) {
+ // spec.
+ var msid = 'msid:' + stream.id + ' ' +
+ transceiver.rtpSender.track.id + '\r\n';
+ sdp += 'a=' + msid;
+
+ // for Chrome.
+ sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +
+ ' ' + msid;
+ if (transceiver.sendEncodingParameters[0].rtx) {
+ sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +
+ ' ' + msid;
+ sdp += 'a=ssrc-group:FID ' +
+ transceiver.sendEncodingParameters[0].ssrc + ' ' +
+ transceiver.sendEncodingParameters[0].rtx.ssrc +
+ '\r\n';
+ }
+ }
+ // FIXME: this should be written by writeRtpDescription.
+ sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +
+ ' cname:' + SDPUtils.localCName + '\r\n';
+ if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) {
+ sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +
+ ' cname:' + SDPUtils.localCName + '\r\n';
+ }
+ return sdp;
+};
+
+// Gets the direction from the mediaSection or the sessionpart.
+SDPUtils.getDirection = function(mediaSection, sessionpart) {
+ // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.
+ var lines = SDPUtils.splitLines(mediaSection);
+ for (var i = 0; i < lines.length; i++) {
+ switch (lines[i]) {
+ case 'a=sendrecv':
+ case 'a=sendonly':
+ case 'a=recvonly':
+ case 'a=inactive':
+ return lines[i].substr(2);
+ default:
+ // FIXME: What should happen here?
+ }
+ }
+ if (sessionpart) {
+ return SDPUtils.getDirection(sessionpart);
+ }
+ return 'sendrecv';
+};
+
+SDPUtils.getKind = function(mediaSection) {
+ var lines = SDPUtils.splitLines(mediaSection);
+ var mline = lines[0].split(' ');
+ return mline[0].substr(2);
+};
+
+SDPUtils.isRejected = function(mediaSection) {
+ return mediaSection.split(' ', 2)[1] === '0';
+};
+
+SDPUtils.parseMLine = function(mediaSection) {
+ var lines = SDPUtils.splitLines(mediaSection);
+ var parts = lines[0].substr(2).split(' ');
+ return {
+ kind: parts[0],
+ port: parseInt(parts[1], 10),
+ protocol: parts[2],
+ fmt: parts.slice(3).join(' ')
+ };
+};
+
+SDPUtils.parseOLine = function(mediaSection) {
+ var line = SDPUtils.matchPrefix(mediaSection, 'o=')[0];
+ var parts = line.substr(2).split(' ');
+ return {
+ username: parts[0],
+ sessionId: parts[1],
+ sessionVersion: parseInt(parts[2], 10),
+ netType: parts[3],
+ addressType: parts[4],
+ address: parts[5],
+ };
+}
+
+// Expose public methods.
+if (typeof module === 'object') {
+ module.exports = SDPUtils;
+}
+
+},{}],3:[function(require,module,exports){
+(function (global){
+ /*
+* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
+*
+* Use of this source code is governed by a BSD-style license
+* that can be found in the LICENSE file in the root of the source
+* tree.
+*/
+ /* eslint-env node */
+
+ 'use strict';
+
+ var adapterFactory = require('./adapter_factory.js');
+ module.exports = adapterFactory({window: global.window});
+
+}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"./adapter_factory.js":4}],4:[function(require,module,exports){
+/*
+* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
+*
+* Use of this source code is governed by a BSD-style license
+* that can be found in the LICENSE file in the root of the source
+* tree.
+*/
+/* eslint-env node */
+
+'use strict';
+
+var utils = require('./utils');
+// Shimming starts here.
+module.exports = function(dependencies, opts) {
+ var window = dependencies && dependencies.window;
+
+ var options = {
+ shimChrome: true,
+ shimFirefox: true,
+ shimEdge: true,
+ shimSafari: true,
+ };
+
+ for (var key in opts) {
+ if (hasOwnProperty.call(opts, key)) {
+ options[key] = opts[key];
+ }
+ }
+
+ // Utils.
+ var logging = utils.log;
+ var browserDetails = utils.detectBrowser(window);
+
+ // Uncomment the line below if you want logging to occur, including logging
+ // for the switch statement below. Can also be turned on in the browser via
+ // adapter.disableLog(false), but then logging from the switch statement below
+ // will not appear.
+ // require('./utils').disableLog(false);
+
+ // Browser shims.
+ var chromeShim = require('./chrome/chrome_shim') || null;
+ var edgeShim = require('./edge/edge_shim') || null;
+ var firefoxShim = require('./firefox/firefox_shim') || null;
+ var safariShim = require('./safari/safari_shim') || null;
+ var commonShim = require('./common_shim') || null;
+
+ // Export to the adapter global object visible in the browser.
+ var adapter = {
+ browserDetails: browserDetails,
+ commonShim: commonShim,
+ extractVersion: utils.extractVersion,
+ disableLog: utils.disableLog,
+ disableWarnings: utils.disableWarnings
+ };
+
+ // Shim browser if found.
+ switch (browserDetails.browser) {
+ case 'chrome':
+ if (!chromeShim || !chromeShim.shimPeerConnection ||
+ !options.shimChrome) {
+ logging('Chrome shim is not included in this adapter release.');
+ return adapter;
+ }
+ logging('adapter.js shimming chrome.');
+ // Export to the adapter global object visible in the browser.
+ adapter.browserShim = chromeShim;
+ commonShim.shimCreateObjectURL(window);
+
+ chromeShim.shimGetUserMedia(window);
+ chromeShim.shimMediaStream(window);
+ chromeShim.shimSourceObject(window);
+ chromeShim.shimPeerConnection(window);
+ chromeShim.shimOnTrack(window);
+ chromeShim.shimAddTrackRemoveTrack(window);
+ chromeShim.shimGetSendersWithDtmf(window);
+
+ commonShim.shimRTCIceCandidate(window);
+ commonShim.shimMaxMessageSize(window);
+ commonShim.shimSendThrowTypeError(window);
+ break;
+ case 'firefox':
+ if (!firefoxShim || !firefoxShim.shimPeerConnection ||
+ !options.shimFirefox) {
+ logging('Firefox shim is not included in this adapter release.');
+ return adapter;
+ }
+ logging('adapter.js shimming firefox.');
+ // Export to the adapter global object visible in the browser.
+ adapter.browserShim = firefoxShim;
+ commonShim.shimCreateObjectURL(window);
+
+ firefoxShim.shimGetUserMedia(window);
+ firefoxShim.shimSourceObject(window);
+ firefoxShim.shimPeerConnection(window);
+ firefoxShim.shimOnTrack(window);
+ firefoxShim.shimRemoveStream(window);
+
+ commonShim.shimRTCIceCandidate(window);
+ commonShim.shimMaxMessageSize(window);
+ commonShim.shimSendThrowTypeError(window);
+ break;
+ case 'edge':
+ if (!edgeShim || !edgeShim.shimPeerConnection || !options.shimEdge) {
+ logging('MS edge shim is not included in this adapter release.');
+ return adapter;
+ }
+ logging('adapter.js shimming edge.');
+ // Export to the adapter global object visible in the browser.
+ adapter.browserShim = edgeShim;
+ commonShim.shimCreateObjectURL(window);
+
+ edgeShim.shimGetUserMedia(window);
+ edgeShim.shimPeerConnection(window);
+ edgeShim.shimReplaceTrack(window);
+
+ // the edge shim implements the full RTCIceCandidate object.
+
+ commonShim.shimMaxMessageSize(window);
+ commonShim.shimSendThrowTypeError(window);
+ break;
+ case 'safari':
+ if (!safariShim || !options.shimSafari) {
+ logging('Safari shim is not included in this adapter release.');
+ return adapter;
+ }
+ logging('adapter.js shimming safari.');
+ // Export to the adapter global object visible in the browser.
+ adapter.browserShim = safariShim;
+ commonShim.shimCreateObjectURL(window);
+
+ safariShim.shimRTCIceServerUrls(window);
+ safariShim.shimCallbacksAPI(window);
+ safariShim.shimLocalStreamsAPI(window);
+ safariShim.shimRemoteStreamsAPI(window);
+ safariShim.shimTrackEventTransceiver(window);
+ safariShim.shimGetUserMedia(window);
+ safariShim.shimCreateOfferLegacy(window);
+
+ commonShim.shimRTCIceCandidate(window);
+ commonShim.shimMaxMessageSize(window);
+ commonShim.shimSendThrowTypeError(window);
+ break;
+ default:
+ logging('Unsupported browser!');
+ break;
+ }
+
+ return adapter;
+};
+
+},{"./chrome/chrome_shim":5,"./common_shim":7,"./edge/edge_shim":8,"./firefox/firefox_shim":10,"./safari/safari_shim":12,"./utils":13}],5:[function(require,module,exports){
+
+/*
+* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
+*
+* Use of this source code is governed by a BSD-style license
+* that can be found in the LICENSE file in the root of the source
+* tree.
+*/
+/* eslint-env node */
+'use strict';
+var utils = require('../utils.js');
+var logging = utils.log;
+
+module.exports = {
+ shimGetUserMedia: require('./getusermedia'),
+ shimMediaStream: function(window) {
+ window.MediaStream = window.MediaStream || window.webkitMediaStream;
+ },
+
+ shimOnTrack: function(window) {
+ if (typeof window === 'object' && window.RTCPeerConnection && !('ontrack' in
+ window.RTCPeerConnection.prototype)) {
+ Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', {
+ get: function() {
+ return this._ontrack;
+ },
+ set: function(f) {
+ if (this._ontrack) {
+ this.removeEventListener('track', this._ontrack);
+ }
+ this.addEventListener('track', this._ontrack = f);
+ }
+ });
+ var origSetRemoteDescription =
+ window.RTCPeerConnection.prototype.setRemoteDescription;
+ window.RTCPeerConnection.prototype.setRemoteDescription = function() {
+ var pc = this;
+ if (!pc._ontrackpoly) {
+ pc._ontrackpoly = function(e) {
+ // onaddstream does not fire when a track is added to an existing
+ // stream. But stream.onaddtrack is implemented so we use that.
+ e.stream.addEventListener('addtrack', function(te) {
+ var receiver;
+ if (window.RTCPeerConnection.prototype.getReceivers) {
+ receiver = pc.getReceivers().find(function(r) {
+ return r.track && r.track.id === te.track.id;
+ });
+ } else {
+ receiver = {track: te.track};
+ }
+
+ var event = new Event('track');
+ event.track = te.track;
+ event.receiver = receiver;
+ event.transceiver = {receiver: receiver};
+ event.streams = [e.stream];
+ pc.dispatchEvent(event);
+ });
+ e.stream.getTracks().forEach(function(track) {
+ var receiver;
+ if (window.RTCPeerConnection.prototype.getReceivers) {
+ receiver = pc.getReceivers().find(function(r) {
+ return r.track && r.track.id === track.id;
+ });
+ } else {
+ receiver = {track: track};
+ }
+ var event = new Event('track');
+ event.track = track;
+ event.receiver = receiver;
+ event.transceiver = {receiver: receiver};
+ event.streams = [e.stream];
+ pc.dispatchEvent(event);
+ });
+ };
+ pc.addEventListener('addstream', pc._ontrackpoly);
+ }
+ return origSetRemoteDescription.apply(pc, arguments);
+ };
+ } else if (!('RTCRtpTransceiver' in window)) {
+ utils.wrapPeerConnectionEvent(window, 'track', function(e) {
+ if (!e.transceiver) {
+ e.transceiver = {receiver: e.receiver};
+ }
+ return e;
+ });
+ }
+ },
+
+ shimGetSendersWithDtmf: function(window) {
+ // Overrides addTrack/removeTrack, depends on shimAddTrackRemoveTrack.
+ if (typeof window === 'object' && window.RTCPeerConnection &&
+ !('getSenders' in window.RTCPeerConnection.prototype) &&
+ 'createDTMFSender' in window.RTCPeerConnection.prototype) {
+ var shimSenderWithDtmf = function(pc, track) {
+ return {
+ track: track,
+ get dtmf() {
+ if (this._dtmf === undefined) {
+ if (track.kind === 'audio') {
+ this._dtmf = pc.createDTMFSender(track);
+ } else {
+ this._dtmf = null;
+ }
+ }
+ return this._dtmf;
+ },
+ _pc: pc
+ };
+ };
+
+ // augment addTrack when getSenders is not available.
+ if (!window.RTCPeerConnection.prototype.getSenders) {
+ window.RTCPeerConnection.prototype.getSenders = function() {
+ this._senders = this._senders || [];
+ return this._senders.slice(); // return a copy of the internal state.
+ };
+ var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
+ window.RTCPeerConnection.prototype.addTrack = function(track, stream) {
+ var pc = this;
+ var sender = origAddTrack.apply(pc, arguments);
+ if (!sender) {
+ sender = shimSenderWithDtmf(pc, track);
+ pc._senders.push(sender);
+ }
+ return sender;
+ };
+
+ var origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack;
+ window.RTCPeerConnection.prototype.removeTrack = function(sender) {
+ var pc = this;
+ origRemoveTrack.apply(pc, arguments);
+ var idx = pc._senders.indexOf(sender);
+ if (idx !== -1) {
+ pc._senders.splice(idx, 1);
+ }
+ };
+ }
+ var origAddStream = window.RTCPeerConnection.prototype.addStream;
+ window.RTCPeerConnection.prototype.addStream = function(stream) {
+ var pc = this;
+ pc._senders = pc._senders || [];
+ origAddStream.apply(pc, [stream]);
+ stream.getTracks().forEach(function(track) {
+ pc._senders.push(shimSenderWithDtmf(pc, track));
+ });
+ };
+
+ var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;
+ window.RTCPeerConnection.prototype.removeStream = function(stream) {
+ var pc = this;
+ pc._senders = pc._senders || [];
+ origRemoveStream.apply(pc, [stream]);
+
+ stream.getTracks().forEach(function(track) {
+ var sender = pc._senders.find(function(s) {
+ return s.track === track;
+ });
+ if (sender) {
+ pc._senders.splice(pc._senders.indexOf(sender), 1); // remove sender
+ }
+ });
+ };
+ } else if (typeof window === 'object' && window.RTCPeerConnection &&
+ 'getSenders' in window.RTCPeerConnection.prototype &&
+ 'createDTMFSender' in window.RTCPeerConnection.prototype &&
+ window.RTCRtpSender &&
+ !('dtmf' in window.RTCRtpSender.prototype)) {
+ var origGetSenders = window.RTCPeerConnection.prototype.getSenders;
+ window.RTCPeerConnection.prototype.getSenders = function() {
+ var pc = this;
+ var senders = origGetSenders.apply(pc, []);
+ senders.forEach(function(sender) {
+ sender._pc = pc;
+ });
+ return senders;
+ };
+
+ Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', {
+ get: function() {
+ if (this._dtmf === undefined) {
+ if (this.track.kind === 'audio') {
+ this._dtmf = this._pc.createDTMFSender(this.track);
+ } else {
+ this._dtmf = null;
+ }
+ }
+ return this._dtmf;
+ }
+ });
+ }
+ },
+
+ shimSourceObject: function(window) {
+ var URL = window && window.URL;
+
+ if (typeof window === 'object') {
+ if (window.HTMLMediaElement &&
+ !('srcObject' in window.HTMLMediaElement.prototype)) {
+ // Shim the srcObject property, once, when HTMLMediaElement is found.
+ Object.defineProperty(window.HTMLMediaElement.prototype, 'srcObject', {
+ get: function() {
+ return this._srcObject;
+ },
+ set: function(stream) {
+ var self = this;
+ // Use _srcObject as a private property for this shim
+ this._srcObject = stream;
+ if (this.src) {
+ URL.revokeObjectURL(this.src);
+ }
+
+ if (!stream) {
+ this.src = '';
+ return undefined;
+ }
+ this.src = URL.createObjectURL(stream);
+ // We need to recreate the blob url when a track is added or
+ // removed. Doing it manually since we want to avoid a recursion.
+ stream.addEventListener('addtrack', function() {
+ if (self.src) {
+ URL.revokeObjectURL(self.src);
+ }
+ self.src = URL.createObjectURL(stream);
+ });
+ stream.addEventListener('removetrack', function() {
+ if (self.src) {
+ URL.revokeObjectURL(self.src);
+ }
+ self.src = URL.createObjectURL(stream);
+ });
+ }
+ });
+ }
+ }
+ },
+
+ shimAddTrackRemoveTrackWithNative: function(window) {
+ // shim addTrack/removeTrack with native variants in order to make
+ // the interactions with legacy getLocalStreams behave as in other browsers.
+ // Keeps a mapping stream.id => [stream, rtpsenders...]
+ window.RTCPeerConnection.prototype.getLocalStreams = function() {
+ var pc = this;
+ this._shimmedLocalStreams = this._shimmedLocalStreams || {};
+ return Object.keys(this._shimmedLocalStreams).map(function(streamId) {
+ return pc._shimmedLocalStreams[streamId][0];
+ });
+ };
+
+ var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
+ window.RTCPeerConnection.prototype.addTrack = function(track, stream) {
+ if (!stream) {
+ return origAddTrack.apply(this, arguments);
+ }
+ this._shimmedLocalStreams = this._shimmedLocalStreams || {};
+
+ var sender = origAddTrack.apply(this, arguments);
+ if (!this._shimmedLocalStreams[stream.id]) {
+ this._shimmedLocalStreams[stream.id] = [stream, sender];
+ } else if (this._shimmedLocalStreams[stream.id].indexOf(sender) === -1) {
+ this._shimmedLocalStreams[stream.id].push(sender);
+ }
+ return sender;
+ };
+
+ var origAddStream = window.RTCPeerConnection.prototype.addStream;
+ window.RTCPeerConnection.prototype.addStream = function(stream) {
+ var pc = this;
+ this._shimmedLocalStreams = this._shimmedLocalStreams || {};
+
+ stream.getTracks().forEach(function(track) {
+ var alreadyExists = pc.getSenders().find(function(s) {
+ return s.track === track;
+ });
+ if (alreadyExists) {
+ throw new DOMException('Track already exists.',
+ 'InvalidAccessError');
+ }
+ });
+ var existingSenders = pc.getSenders();
+ origAddStream.apply(this, arguments);
+ var newSenders = pc.getSenders().filter(function(newSender) {
+ return existingSenders.indexOf(newSender) === -1;
+ });
+ this._shimmedLocalStreams[stream.id] = [stream].concat(newSenders);
+ };
+
+ var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;
+ window.RTCPeerConnection.prototype.removeStream = function(stream) {
+ this._shimmedLocalStreams = this._shimmedLocalStreams || {};
+ delete this._shimmedLocalStreams[stream.id];
+ return origRemoveStream.apply(this, arguments);
+ };
+
+ var origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack;
+ window.RTCPeerConnection.prototype.removeTrack = function(sender) {
+ var pc = this;
+ this._shimmedLocalStreams = this._shimmedLocalStreams || {};
+ if (sender) {
+ Object.keys(this._shimmedLocalStreams).forEach(function(streamId) {
+ var idx = pc._shimmedLocalStreams[streamId].indexOf(sender);
+ if (idx !== -1) {
+ pc._shimmedLocalStreams[streamId].splice(idx, 1);
+ }
+ if (pc._shimmedLocalStreams[streamId].length === 1) {
+ delete pc._shimmedLocalStreams[streamId];
+ }
+ });
+ }
+ return origRemoveTrack.apply(this, arguments);
+ };
+ },
+
+ shimAddTrackRemoveTrack: function(window) {
+ var browserDetails = utils.detectBrowser(window);
+ // shim addTrack and removeTrack.
+ if (window.RTCPeerConnection.prototype.addTrack &&
+ browserDetails.version >= 65) {
+ return this.shimAddTrackRemoveTrackWithNative(window);
+ }
+
+ // also shim pc.getLocalStreams when addTrack is shimmed
+ // to return the original streams.
+ var origGetLocalStreams = window.RTCPeerConnection.prototype
+ .getLocalStreams;
+ window.RTCPeerConnection.prototype.getLocalStreams = function() {
+ var pc = this;
+ var nativeStreams = origGetLocalStreams.apply(this);
+ pc._reverseStreams = pc._reverseStreams || {};
+ return nativeStreams.map(function(stream) {
+ return pc._reverseStreams[stream.id];
+ });
+ };
+
+ var origAddStream = window.RTCPeerConnection.prototype.addStream;
+ window.RTCPeerConnection.prototype.addStream = function(stream) {
+ var pc = this;
+ pc._streams = pc._streams || {};
+ pc._reverseStreams = pc._reverseStreams || {};
+
+ stream.getTracks().forEach(function(track) {
+ var alreadyExists = pc.getSenders().find(function(s) {
+ return s.track === track;
+ });
+ if (alreadyExists) {
+ throw new DOMException('Track already exists.',
+ 'InvalidAccessError');
+ }
+ });
+ // Add identity mapping for consistency with addTrack.
+ // Unless this is being used with a stream from addTrack.
+ if (!pc._reverseStreams[stream.id]) {
+ var newStream = new window.MediaStream(stream.getTracks());
+ pc._streams[stream.id] = newStream;
+ pc._reverseStreams[newStream.id] = stream;
+ stream = newStream;
+ }
+ origAddStream.apply(pc, [stream]);
+ };
+
+ var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;
+ window.RTCPeerConnection.prototype.removeStream = function(stream) {
+ var pc = this;
+ pc._streams = pc._streams || {};
+ pc._reverseStreams = pc._reverseStreams || {};
+
+ origRemoveStream.apply(pc, [(pc._streams[stream.id] || stream)]);
+ delete pc._reverseStreams[(pc._streams[stream.id] ?
+ pc._streams[stream.id].id : stream.id)];
+ delete pc._streams[stream.id];
+ };
+
+ window.RTCPeerConnection.prototype.addTrack = function(track, stream) {
+ var pc = this;
+ if (pc.signalingState === 'closed') {
+ throw new DOMException(
+ 'The RTCPeerConnection\'s signalingState is \'closed\'.',
+ 'InvalidStateError');
+ }
+ var streams = [].slice.call(arguments, 1);
+ if (streams.length !== 1 ||
+ !streams[0].getTracks().find(function(t) {
+ return t === track;
+ })) {
+ // this is not fully correct but all we can manage without
+ // [[associated MediaStreams]] internal slot.
+ throw new DOMException(
+ 'The adapter.js addTrack polyfill only supports a single ' +
+ ' stream which is associated with the specified track.',
+ 'NotSupportedError');
+ }
+
+ var alreadyExists = pc.getSenders().find(function(s) {
+ return s.track === track;
+ });
+ if (alreadyExists) {
+ throw new DOMException('Track already exists.',
+ 'InvalidAccessError');
+ }
+
+ pc._streams = pc._streams || {};
+ pc._reverseStreams = pc._reverseStreams || {};
+ var oldStream = pc._streams[stream.id];
+ if (oldStream) {
+ // this is using odd Chrome behaviour, use with caution:
+ // https://bugs.chromium.org/p/webrtc/issues/detail?id=7815
+ // Note: we rely on the high-level addTrack/dtmf shim to
+ // create the sender with a dtmf sender.
+ oldStream.addTrack(track);
+
+ // Trigger ONN async.
+ Promise.resolve().then(function() {
+ pc.dispatchEvent(new Event('negotiationneeded'));
+ });
+ } else {
+ var newStream = new window.MediaStream([track]);
+ pc._streams[stream.id] = newStream;
+ pc._reverseStreams[newStream.id] = stream;
+ pc.addStream(newStream);
+ }
+ return pc.getSenders().find(function(s) {
+ return s.track === track;
+ });
+ };
+
+ // replace the internal stream id with the external one and
+ // vice versa.
+ function replaceInternalStreamId(pc, description) {
+ var sdp = description.sdp;
+ Object.keys(pc._reverseStreams || []).forEach(function(internalId) {
+ var externalStream = pc._reverseStreams[internalId];
+ var internalStream = pc._streams[externalStream.id];
+ sdp = sdp.replace(new RegExp(internalStream.id, 'g'),
+ externalStream.id);
+ });
+ return new RTCSessionDescription({
+ type: description.type,
+ sdp: sdp
+ });
+ }
+ function replaceExternalStreamId(pc, description) {
+ var sdp = description.sdp;
+ Object.keys(pc._reverseStreams || []).forEach(function(internalId) {
+ var externalStream = pc._reverseStreams[internalId];
+ var internalStream = pc._streams[externalStream.id];
+ sdp = sdp.replace(new RegExp(externalStream.id, 'g'),
+ internalStream.id);
+ });
+ return new RTCSessionDescription({
+ type: description.type,
+ sdp: sdp
+ });
+ }
+ ['createOffer', 'createAnswer'].forEach(function(method) {
+ var nativeMethod = window.RTCPeerConnection.prototype[method];
+ window.RTCPeerConnection.prototype[method] = function() {
+ var pc = this;
+ var args = arguments;
+ var isLegacyCall = arguments.length &&
+ typeof arguments[0] === 'function';
+ if (isLegacyCall) {
+ return nativeMethod.apply(pc, [
+ function(description) {
+ var desc = replaceInternalStreamId(pc, description);
+ args[0].apply(null, [desc]);
+ },
+ function(err) {
+ if (args[1]) {
+ args[1].apply(null, err);
+ }
+ }, arguments[2]
+ ]);
+ }
+ return nativeMethod.apply(pc, arguments)
+ .then(function(description) {
+ return replaceInternalStreamId(pc, description);
+ });
+ };
+ });
+
+ var origSetLocalDescription =
+ window.RTCPeerConnection.prototype.setLocalDescription;
+ window.RTCPeerConnection.prototype.setLocalDescription = function() {
+ var pc = this;
+ if (!arguments.length || !arguments[0].type) {
+ return origSetLocalDescription.apply(pc, arguments);
+ }
+ arguments[0] = replaceExternalStreamId(pc, arguments[0]);
+ return origSetLocalDescription.apply(pc, arguments);
+ };
+
+ // TODO: mangle getStats: https://w3c.github.io/webrtc-stats/#dom-rtcmediastreamstats-streamidentifier
+
+ var origLocalDescription = Object.getOwnPropertyDescriptor(
+ window.RTCPeerConnection.prototype, 'localDescription');
+ Object.defineProperty(window.RTCPeerConnection.prototype,
+ 'localDescription', {
+ get: function() {
+ var pc = this;
+ var description = origLocalDescription.get.apply(this);
+ if (description.type === '') {
+ return description;
+ }
+ return replaceInternalStreamId(pc, description);
+ }
+ });
+
+ window.RTCPeerConnection.prototype.removeTrack = function(sender) {
+ var pc = this;
+ if (pc.signalingState === 'closed') {
+ throw new DOMException(
+ 'The RTCPeerConnection\'s signalingState is \'closed\'.',
+ 'InvalidStateError');
+ }
+ // We can not yet check for sender instanceof RTCRtpSender
+ // since we shim RTPSender. So we check if sender._pc is set.
+ if (!sender._pc) {
+ throw new DOMException('Argument 1 of RTCPeerConnection.removeTrack ' +
+ 'does not implement interface RTCRtpSender.', 'TypeError');
+ }
+ var isLocal = sender._pc === pc;
+ if (!isLocal) {
+ throw new DOMException('Sender was not created by this connection.',
+ 'InvalidAccessError');
+ }
+
+ // Search for the native stream the senders track belongs to.
+ pc._streams = pc._streams || {};
+ var stream;
+ Object.keys(pc._streams).forEach(function(streamid) {
+ var hasTrack = pc._streams[streamid].getTracks().find(function(track) {
+ return sender.track === track;
+ });
+ if (hasTrack) {
+ stream = pc._streams[streamid];
+ }
+ });
+
+ if (stream) {
+ if (stream.getTracks().length === 1) {
+ // if this is the last track of the stream, remove the stream. This
+ // takes care of any shimmed _senders.
+ pc.removeStream(pc._reverseStreams[stream.id]);
+ } else {
+ // relying on the same odd chrome behaviour as above.
+ stream.removeTrack(sender.track);
+ }
+ pc.dispatchEvent(new Event('negotiationneeded'));
+ }
+ };
+ },
+
+ shimPeerConnection: function(window) {
+ var browserDetails = utils.detectBrowser(window);
+
+ // The RTCPeerConnection object.
+ if (!window.RTCPeerConnection && window.webkitRTCPeerConnection) {
+ window.RTCPeerConnection = function(pcConfig, pcConstraints) {
+ // Translate iceTransportPolicy to iceTransports,
+ // see https://code.google.com/p/webrtc/issues/detail?id=4869
+ // this was fixed in M56 along with unprefixing RTCPeerConnection.
+ logging('PeerConnection');
+ if (pcConfig && pcConfig.iceTransportPolicy) {
+ pcConfig.iceTransports = pcConfig.iceTransportPolicy;
+ }
+
+ return new window.webkitRTCPeerConnection(pcConfig, pcConstraints);
+ };
+ window.RTCPeerConnection.prototype =
+ window.webkitRTCPeerConnection.prototype;
+ // wrap static methods. Currently just generateCertificate.
+ if (window.webkitRTCPeerConnection.generateCertificate) {
+ Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', {
+ get: function() {
+ return window.webkitRTCPeerConnection.generateCertificate;
+ }
+ });
+ }
+ } else {
+ // migrate from non-spec RTCIceServer.url to RTCIceServer.urls
+ var OrigPeerConnection = window.RTCPeerConnection;
+ window.RTCPeerConnection = function(pcConfig, pcConstraints) {
+ if (pcConfig && pcConfig.iceServers) {
+ var newIceServers = [];
+ for (var i = 0; i < pcConfig.iceServers.length; i++) {
+ var server = pcConfig.iceServers[i];
+ if (!server.hasOwnProperty('urls') &&
+ server.hasOwnProperty('url')) {
+ utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls');
+ server = JSON.parse(JSON.stringify(server));
+ server.urls = server.url;
+ newIceServers.push(server);
+ } else {
+ newIceServers.push(pcConfig.iceServers[i]);
+ }
+ }
+ pcConfig.iceServers = newIceServers;
+ }
+ return new OrigPeerConnection(pcConfig, pcConstraints);
+ };
+ window.RTCPeerConnection.prototype = OrigPeerConnection.prototype;
+ // wrap static methods. Currently just generateCertificate.
+ Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', {
+ get: function() {
+ return OrigPeerConnection.generateCertificate;
+ }
+ });
+ }
+
+ var origGetStats = window.RTCPeerConnection.prototype.getStats;
+ window.RTCPeerConnection.prototype.getStats = function(selector,
+ successCallback, errorCallback) {
+ var pc = this;
+ var args = arguments;
+
+ // If selector is a function then we are in the old style stats so just
+ // pass back the original getStats format to avoid breaking old users.
+ if (arguments.length > 0 && typeof selector === 'function') {
+ return origGetStats.apply(this, arguments);
+ }
+
+ // When spec-style getStats is supported, return those when called with
+ // either no arguments or the selector argument is null.
+ if (origGetStats.length === 0 && (arguments.length === 0 ||
+ typeof arguments[0] !== 'function')) {
+ return origGetStats.apply(this, []);
+ }
+
+ var fixChromeStats_ = function(response) {
+ var standardReport = {};
+ var reports = response.result();
+ reports.forEach(function(report) {
+ var standardStats = {
+ id: report.id,
+ timestamp: report.timestamp,
+ type: {
+ localcandidate: 'local-candidate',
+ remotecandidate: 'remote-candidate'
+ }[report.type] || report.type
+ };
+ report.names().forEach(function(name) {
+ standardStats[name] = report.stat(name);
+ });
+ standardReport[standardStats.id] = standardStats;
+ });
+
+ return standardReport;
+ };
+
+ // shim getStats with maplike support
+ var makeMapStats = function(stats) {
+ return new Map(Object.keys(stats).map(function(key) {
+ return [key, stats[key]];
+ }));
+ };
+
+ if (arguments.length >= 2) {
+ var successCallbackWrapper_ = function(response) {
+ args[1](makeMapStats(fixChromeStats_(response)));
+ };
+
+ return origGetStats.apply(this, [successCallbackWrapper_,
+ arguments[0]]);
+ }
+
+ // promise-support
+ return new Promise(function(resolve, reject) {
+ origGetStats.apply(pc, [
+ function(response) {
+ resolve(makeMapStats(fixChromeStats_(response)));
+ }, reject]);
+ }).then(successCallback, errorCallback);
+ };
+
+ // add promise support -- natively available in Chrome 51
+ if (browserDetails.version < 51) {
+ ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate']
+ .forEach(function(method) {
+ var nativeMethod = window.RTCPeerConnection.prototype[method];
+ window.RTCPeerConnection.prototype[method] = function() {
+ var args = arguments;
+ var pc = this;
+ var promise = new Promise(function(resolve, reject) {
+ nativeMethod.apply(pc, [args[0], resolve, reject]);
+ });
+ if (args.length < 2) {
+ return promise;
+ }
+ return promise.then(function() {
+ args[1].apply(null, []);
+ },
+ function(err) {
+ if (args.length >= 3) {
+ args[2].apply(null, [err]);
+ }
+ });
+ };
+ });
+ }
+
+ // promise support for createOffer and createAnswer. Available (without
+ // bugs) since M52: crbug/619289
+ if (browserDetails.version < 52) {
+ ['createOffer', 'createAnswer'].forEach(function(method) {
+ var nativeMethod = window.RTCPeerConnection.prototype[method];
+ window.RTCPeerConnection.prototype[method] = function() {
+ var pc = this;
+ if (arguments.length < 1 || (arguments.length === 1 &&
+ typeof arguments[0] === 'object')) {
+ var opts = arguments.length === 1 ? arguments[0] : undefined;
+ return new Promise(function(resolve, reject) {
+ nativeMethod.apply(pc, [resolve, reject, opts]);
+ });
+ }
+ return nativeMethod.apply(this, arguments);
+ };
+ });
+ }
+
+ // shim implicit creation of RTCSessionDescription/RTCIceCandidate
+ ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate']
+ .forEach(function(method) {
+ var nativeMethod = window.RTCPeerConnection.prototype[method];
+ window.RTCPeerConnection.prototype[method] = function() {
+ arguments[0] = new ((method === 'addIceCandidate') ?
+ window.RTCIceCandidate :
+ window.RTCSessionDescription)(arguments[0]);
+ return nativeMethod.apply(this, arguments);
+ };
+ });
+
+ // support for addIceCandidate(null or undefined)
+ var nativeAddIceCandidate =
+ window.RTCPeerConnection.prototype.addIceCandidate;
+ window.RTCPeerConnection.prototype.addIceCandidate = function() {
+ if (!arguments[0]) {
+ if (arguments[1]) {
+ arguments[1].apply(null);
+ }
+ return Promise.resolve();
+ }
+ return nativeAddIceCandidate.apply(this, arguments);
+ };
+ }
+};
+
+},{"../utils.js":13,"./getusermedia":6}],6:[function(require,module,exports){
+/*
+* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
+*
+* Use of this source code is governed by a BSD-style license
+* that can be found in the LICENSE file in the root of the source
+* tree.
+*/
+/* eslint-env node */
+'use strict';
+var utils = require('../utils.js');
+var logging = utils.log;
+
+// Expose public methods.
+module.exports = function(window) {
+ var browserDetails = utils.detectBrowser(window);
+ var navigator = window && window.navigator;
+
+ var constraintsToChrome_ = function(c) {
+ if (typeof c !== 'object' || c.mandatory || c.optional) {
+ return c;
+ }
+ var cc = {};
+ Object.keys(c).forEach(function(key) {
+ if (key === 'require' || key === 'advanced' || key === 'mediaSource') {
+ return;
+ }
+ var r = (typeof c[key] === 'object') ? c[key] : {ideal: c[key]};
+ if (r.exact !== undefined && typeof r.exact === 'number') {
+ r.min = r.max = r.exact;
+ }
+ var oldname_ = function(prefix, name) {
+ if (prefix) {
+ return prefix + name.charAt(0).toUpperCase() + name.slice(1);
+ }
+ return (name === 'deviceId') ? 'sourceId' : name;
+ };
+ if (r.ideal !== undefined) {
+ cc.optional = cc.optional || [];
+ var oc = {};
+ if (typeof r.ideal === 'number') {
+ oc[oldname_('min', key)] = r.ideal;
+ cc.optional.push(oc);
+ oc = {};
+ oc[oldname_('max', key)] = r.ideal;
+ cc.optional.push(oc);
+ } else {
+ oc[oldname_('', key)] = r.ideal;
+ cc.optional.push(oc);
+ }
+ }
+ if (r.exact !== undefined && typeof r.exact !== 'number') {
+ cc.mandatory = cc.mandatory || {};
+ cc.mandatory[oldname_('', key)] = r.exact;
+ } else {
+ ['min', 'max'].forEach(function(mix) {
+ if (r[mix] !== undefined) {
+ cc.mandatory = cc.mandatory || {};
+ cc.mandatory[oldname_(mix, key)] = r[mix];
+ }
+ });
+ }
+ });
+ if (c.advanced) {
+ cc.optional = (cc.optional || []).concat(c.advanced);
+ }
+ return cc;
+ };
+
+ var shimConstraints_ = function(constraints, func) {
+ if (browserDetails.version >= 61) {
+ return func(constraints);
+ }
+ constraints = JSON.parse(JSON.stringify(constraints));
+ if (constraints && typeof constraints.audio === 'object') {
+ var remap = function(obj, a, b) {
+ if (a in obj && !(b in obj)) {
+ obj[b] = obj[a];
+ delete obj[a];
+ }
+ };
+ constraints = JSON.parse(JSON.stringify(constraints));
+ remap(constraints.audio, 'autoGainControl', 'googAutoGainControl');
+ remap(constraints.audio, 'noiseSuppression', 'googNoiseSuppression');
+ constraints.audio = constraintsToChrome_(constraints.audio);
+ }
+ if (constraints && typeof constraints.video === 'object') {
+ // Shim facingMode for mobile & surface pro.
+ var face = constraints.video.facingMode;
+ face = face && ((typeof face === 'object') ? face : {ideal: face});
+ var getSupportedFacingModeLies = browserDetails.version < 66;
+
+ if ((face && (face.exact === 'user' || face.exact === 'environment' ||
+ face.ideal === 'user' || face.ideal === 'environment')) &&
+ !(navigator.mediaDevices.getSupportedConstraints &&
+ navigator.mediaDevices.getSupportedConstraints().facingMode &&
+ !getSupportedFacingModeLies)) {
+ delete constraints.video.facingMode;
+ var matches;
+ if (face.exact === 'environment' || face.ideal === 'environment') {
+ matches = ['back', 'rear'];
+ } else if (face.exact === 'user' || face.ideal === 'user') {
+ matches = ['front'];
+ }
+ if (matches) {
+ // Look for matches in label, or use last cam for back (typical).
+ return navigator.mediaDevices.enumerateDevices()
+ .then(function(devices) {
+ devices = devices.filter(function(d) {
+ return d.kind === 'videoinput';
+ });
+ var dev = devices.find(function(d) {
+ return matches.some(function(match) {
+ return d.label.toLowerCase().indexOf(match) !== -1;
+ });
+ });
+ if (!dev && devices.length && matches.indexOf('back') !== -1) {
+ dev = devices[devices.length - 1]; // more likely the back cam
+ }
+ if (dev) {
+ constraints.video.deviceId = face.exact ? {exact: dev.deviceId} :
+ {ideal: dev.deviceId};
+ }
+ constraints.video = constraintsToChrome_(constraints.video);
+ logging('chrome: ' + JSON.stringify(constraints));
+ return func(constraints);
+ });
+ }
+ }
+ constraints.video = constraintsToChrome_(constraints.video);
+ }
+ logging('chrome: ' + JSON.stringify(constraints));
+ return func(constraints);
+ };
+
+ var shimError_ = function(e) {
+ return {
+ name: {
+ PermissionDeniedError: 'NotAllowedError',
+ PermissionDismissedError: 'NotAllowedError',
+ InvalidStateError: 'NotAllowedError',
+ DevicesNotFoundError: 'NotFoundError',
+ ConstraintNotSatisfiedError: 'OverconstrainedError',
+ TrackStartError: 'NotReadableError',
+ MediaDeviceFailedDueToShutdown: 'NotAllowedError',
+ MediaDeviceKillSwitchOn: 'NotAllowedError',
+ TabCaptureError: 'AbortError',
+ ScreenCaptureError: 'AbortError',
+ DeviceCaptureError: 'AbortError'
+ }[e.name] || e.name,
+ message: e.message,
+ constraint: e.constraintName,
+ toString: function() {
+ return this.name + (this.message && ': ') + this.message;
+ }
+ };
+ };
+
+ var getUserMedia_ = function(constraints, onSuccess, onError) {
+ shimConstraints_(constraints, function(c) {
+ navigator.webkitGetUserMedia(c, onSuccess, function(e) {
+ if (onError) {
+ onError(shimError_(e));
+ }
+ });
+ });
+ };
+
+ navigator.getUserMedia = getUserMedia_;
+
+ // Returns the result of getUserMedia as a Promise.
+ var getUserMediaPromise_ = function(constraints) {
+ return new Promise(function(resolve, reject) {
+ navigator.getUserMedia(constraints, resolve, reject);
+ });
+ };
+
+ if (!navigator.mediaDevices) {
+ navigator.mediaDevices = {
+ getUserMedia: getUserMediaPromise_,
+ enumerateDevices: function() {
+ return new Promise(function(resolve) {
+ var kinds = {audio: 'audioinput', video: 'videoinput'};
+ return window.MediaStreamTrack.getSources(function(devices) {
+ resolve(devices.map(function(device) {
+ return {label: device.label,
+ kind: kinds[device.kind],
+ deviceId: device.id,
+ groupId: ''};
+ }));
+ });
+ });
+ },
+ getSupportedConstraints: function() {
+ return {
+ deviceId: true, echoCancellation: true, facingMode: true,
+ frameRate: true, height: true, width: true
+ };
+ }
+ };
+ }
+
+ // A shim for getUserMedia method on the mediaDevices object.
+ // TODO(KaptenJansson) remove once implemented in Chrome stable.
+ if (!navigator.mediaDevices.getUserMedia) {
+ navigator.mediaDevices.getUserMedia = function(constraints) {
+ return getUserMediaPromise_(constraints);
+ };
+ } else {
+ // Even though Chrome 45 has navigator.mediaDevices and a getUserMedia
+ // function which returns a Promise, it does not accept spec-style
+ // constraints.
+ var origGetUserMedia = navigator.mediaDevices.getUserMedia.
+ bind(navigator.mediaDevices);
+ navigator.mediaDevices.getUserMedia = function(cs) {
+ return shimConstraints_(cs, function(c) {
+ return origGetUserMedia(c).then(function(stream) {
+ if (c.audio && !stream.getAudioTracks().length ||
+ c.video && !stream.getVideoTracks().length) {
+ stream.getTracks().forEach(function(track) {
+ track.stop();
+ });
+ throw new DOMException('', 'NotFoundError');
+ }
+ return stream;
+ }, function(e) {
+ return Promise.reject(shimError_(e));
+ });
+ });
+ };
+ }
+
+ // Dummy devicechange event methods.
+ // TODO(KaptenJansson) remove once implemented in Chrome stable.
+ if (typeof navigator.mediaDevices.addEventListener === 'undefined') {
+ navigator.mediaDevices.addEventListener = function() {
+ logging('Dummy mediaDevices.addEventListener called.');
+ };
+ }
+ if (typeof navigator.mediaDevices.removeEventListener === 'undefined') {
+ navigator.mediaDevices.removeEventListener = function() {
+ logging('Dummy mediaDevices.removeEventListener called.');
+ };
+ }
+};
+
+},{"../utils.js":13}],7:[function(require,module,exports){
+/*
+* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
+*
+* Use of this source code is governed by a BSD-style license
+* that can be found in the LICENSE file in the root of the source
+* tree.
+*/
+/* eslint-env node */
+'use strict';
+
+var SDPUtils = require('sdp');
+var utils = require('./utils');
+
+module.exports = {
+ shimRTCIceCandidate: function(window) {
+ // foundation is arbitrarily chosen as an indicator for full support for
+ // https://w3c.github.io/webrtc-pc/#rtcicecandidate-interface
+ if (!window.RTCIceCandidate || (window.RTCIceCandidate && 'foundation' in
+ window.RTCIceCandidate.prototype)) {
+ return;
+ }
+
+ var NativeRTCIceCandidate = window.RTCIceCandidate;
+ window.RTCIceCandidate = function(args) {
+ // Remove the a= which shouldn't be part of the candidate string.
+ if (typeof args === 'object' && args.candidate &&
+ args.candidate.indexOf('a=') === 0) {
+ args = JSON.parse(JSON.stringify(args));
+ args.candidate = args.candidate.substr(2);
+ }
+
+ if (args.candidate && args.candidate.length) {
+ // Augment the native candidate with the parsed fields.
+ var nativeCandidate = new NativeRTCIceCandidate(args);
+ var parsedCandidate = SDPUtils.parseCandidate(args.candidate);
+ var augmentedCandidate = Object.assign(nativeCandidate,
+ parsedCandidate);
+
+ // Add a serializer that does not serialize the extra attributes.
+ augmentedCandidate.toJSON = function() {
+ return {
+ candidate: augmentedCandidate.candidate,
+ sdpMid: augmentedCandidate.sdpMid,
+ sdpMLineIndex: augmentedCandidate.sdpMLineIndex,
+ usernameFragment: augmentedCandidate.usernameFragment,
+ };
+ };
+ return augmentedCandidate;
+ }
+ return new NativeRTCIceCandidate(args);
+ };
+ window.RTCIceCandidate.prototype = NativeRTCIceCandidate.prototype;
+
+ // Hook up the augmented candidate in onicecandidate and
+ // addEventListener('icecandidate', ...)
+ utils.wrapPeerConnectionEvent(window, 'icecandidate', function(e) {
+ if (e.candidate) {
+ Object.defineProperty(e, 'candidate', {
+ value: new window.RTCIceCandidate(e.candidate),
+ writable: 'false'
+ });
+ }
+ return e;
+ });
+ },
+
+ // shimCreateObjectURL must be called before shimSourceObject to avoid loop.
+
+ shimCreateObjectURL: function(window) {
+ var URL = window && window.URL;
+
+ if (!(typeof window === 'object' && window.HTMLMediaElement &&
+ 'srcObject' in window.HTMLMediaElement.prototype &&
+ URL.createObjectURL && URL.revokeObjectURL)) {
+ // Only shim CreateObjectURL using srcObject if srcObject exists.
+ return undefined;
+ }
+
+ var nativeCreateObjectURL = URL.createObjectURL.bind(URL);
+ var nativeRevokeObjectURL = URL.revokeObjectURL.bind(URL);
+ var streams = new Map(), newId = 0;
+
+ URL.createObjectURL = function(stream) {
+ if ('getTracks' in stream) {
+ var url = 'polyblob:' + (++newId);
+ streams.set(url, stream);
+ utils.deprecated('URL.createObjectURL(stream)',
+ 'elem.srcObject = stream');
+ return url;
+ }
+ return nativeCreateObjectURL(stream);
+ };
+ URL.revokeObjectURL = function(url) {
+ nativeRevokeObjectURL(url);
+ streams.delete(url);
+ };
+
+ var dsc = Object.getOwnPropertyDescriptor(window.HTMLMediaElement.prototype,
+ 'src');
+ Object.defineProperty(window.HTMLMediaElement.prototype, 'src', {
+ get: function() {
+ return dsc.get.apply(this);
+ },
+ set: function(url) {
+ this.srcObject = streams.get(url) || null;
+ return dsc.set.apply(this, [url]);
+ }
+ });
+
+ var nativeSetAttribute = window.HTMLMediaElement.prototype.setAttribute;
+ window.HTMLMediaElement.prototype.setAttribute = function() {
+ if (arguments.length === 2 &&
+ ('' + arguments[0]).toLowerCase() === 'src') {
+ this.srcObject = streams.get(arguments[1]) || null;
+ }
+ return nativeSetAttribute.apply(this, arguments);
+ };
+ },
+
+ shimMaxMessageSize: function(window) {
+ if (window.RTCSctpTransport || !window.RTCPeerConnection) {
+ return;
+ }
+ var browserDetails = utils.detectBrowser(window);
+
+ if (!('sctp' in window.RTCPeerConnection.prototype)) {
+ Object.defineProperty(window.RTCPeerConnection.prototype, 'sctp', {
+ get: function() {
+ return typeof this._sctp === 'undefined' ? null : this._sctp;
+ }
+ });
+ }
+
+ var sctpInDescription = function(description) {
+ var sections = SDPUtils.splitSections(description.sdp);
+ sections.shift();
+ return sections.some(function(mediaSection) {
+ var mLine = SDPUtils.parseMLine(mediaSection);
+ return mLine && mLine.kind === 'application'
+ && mLine.protocol.indexOf('SCTP') !== -1;
+ });
+ };
+
+ var getRemoteFirefoxVersion = function(description) {
+ // TODO: Is there a better solution for detecting Firefox?
+ var match = description.sdp.match(/mozilla...THIS_IS_SDPARTA-(\d+)/);
+ if (match === null || match.length < 2) {
+ return -1;
+ }
+ var version = parseInt(match[1], 10);
+ // Test for NaN (yes, this is ugly)
+ return version !== version ? -1 : version;
+ };
+
+ var getCanSendMaxMessageSize = function(remoteIsFirefox) {
+ // Every implementation we know can send at least 64 KiB.
+ // Note: Although Chrome is technically able to send up to 256 KiB, the
+ // data does not reach the other peer reliably.
+ // See: https://bugs.chromium.org/p/webrtc/issues/detail?id=8419
+ var canSendMaxMessageSize = 65536;
+ if (browserDetails.browser === 'firefox') {
+ if (browserDetails.version < 57) {
+ if (remoteIsFirefox === -1) {
+ // FF < 57 will send in 16 KiB chunks using the deprecated PPID
+ // fragmentation.
+ canSendMaxMessageSize = 16384;
+ } else {
+ // However, other FF (and RAWRTC) can reassemble PPID-fragmented
+ // messages. Thus, supporting ~2 GiB when sending.
+ canSendMaxMessageSize = 2147483637;
+ }
+ } else {
+ // Currently, all FF >= 57 will reset the remote maximum message size
+ // to the default value when a data channel is created at a later
+ // stage. :(
+ // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1426831
+ canSendMaxMessageSize =
+ browserDetails.version === 57 ? 65535 : 65536;
+ }
+ }
+ return canSendMaxMessageSize;
+ };
+
+ var getMaxMessageSize = function(description, remoteIsFirefox) {
+ // Note: 65536 bytes is the default value from the SDP spec. Also,
+ // every implementation we know supports receiving 65536 bytes.
+ var maxMessageSize = 65536;
+
+ // FF 57 has a slightly incorrect default remote max message size, so
+ // we need to adjust it here to avoid a failure when sending.
+ // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1425697
+ if (browserDetails.browser === 'firefox'
+ && browserDetails.version === 57) {
+ maxMessageSize = 65535;
+ }
+
+ var match = SDPUtils.matchPrefix(description.sdp, 'a=max-message-size:');
+ if (match.length > 0) {
+ maxMessageSize = parseInt(match[0].substr(19), 10);
+ } else if (browserDetails.browser === 'firefox' &&
+ remoteIsFirefox !== -1) {
+ // If the maximum message size is not present in the remote SDP and
+ // both local and remote are Firefox, the remote peer can receive
+ // ~2 GiB.
+ maxMessageSize = 2147483637;
+ }
+ return maxMessageSize;
+ };
+
+ var origSetRemoteDescription =
+ window.RTCPeerConnection.prototype.setRemoteDescription;
+ window.RTCPeerConnection.prototype.setRemoteDescription = function() {
+ var pc = this;
+ pc._sctp = null;
+
+ if (sctpInDescription(arguments[0])) {
+ // Check if the remote is FF.
+ var isFirefox = getRemoteFirefoxVersion(arguments[0]);
+
+ // Get the maximum message size the local peer is capable of sending
+ var canSendMMS = getCanSendMaxMessageSize(isFirefox);
+
+ // Get the maximum message size of the remote peer.
+ var remoteMMS = getMaxMessageSize(arguments[0], isFirefox);
+
+ // Determine final maximum message size
+ var maxMessageSize;
+ if (canSendMMS === 0 && remoteMMS === 0) {
+ maxMessageSize = Number.POSITIVE_INFINITY;
+ } else if (canSendMMS === 0 || remoteMMS === 0) {
+ maxMessageSize = Math.max(canSendMMS, remoteMMS);
+ } else {
+ maxMessageSize = Math.min(canSendMMS, remoteMMS);
+ }
+
+ // Create a dummy RTCSctpTransport object and the 'maxMessageSize'
+ // attribute.
+ var sctp = {};
+ Object.defineProperty(sctp, 'maxMessageSize', {
+ get: function() {
+ return maxMessageSize;
+ }
+ });
+ pc._sctp = sctp;
+ }
+
+ return origSetRemoteDescription.apply(pc, arguments);
+ };
+ },
+
+ shimSendThrowTypeError: function(window) {
+ if (!(window.RTCPeerConnection &&
+ 'createDataChannel' in window.RTCPeerConnection.prototype)) {
+ return;
+ }
+
+ // Note: Although Firefox >= 57 has a native implementation, the maximum
+ // message size can be reset for all data channels at a later stage.
+ // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1426831
+
+ var origCreateDataChannel =
+ window.RTCPeerConnection.prototype.createDataChannel;
+ window.RTCPeerConnection.prototype.createDataChannel = function() {
+ var pc = this;
+ var dataChannel = origCreateDataChannel.apply(pc, arguments);
+ var origDataChannelSend = dataChannel.send;
+
+ // Patch 'send' method
+ dataChannel.send = function() {
+ var dc = this;
+ var data = arguments[0];
+ var length = data.length || data.size || data.byteLength;
+ if (length > pc.sctp.maxMessageSize) {
+ throw new DOMException('Message too large (can send a maximum of ' +
+ pc.sctp.maxMessageSize + ' bytes)', 'TypeError');
+ }
+ return origDataChannelSend.apply(dc, arguments);
+ };
+
+ return dataChannel;
+ };
+ }
+};
+
+},{"./utils":13,"sdp":2}],8:[function(require,module,exports){
+/*
+* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
+*
+* Use of this source code is governed by a BSD-style license
+* that can be found in the LICENSE file in the root of the source
+* tree.
+*/
+/* eslint-env node */
+'use strict';
+
+var utils = require('../utils');
+var shimRTCPeerConnection = require('rtcpeerconnection-shim');
+
+module.exports = {
+ shimGetUserMedia: require('./getusermedia'),
+ shimPeerConnection: function(window) {
+ var browserDetails = utils.detectBrowser(window);
+
+ if (window.RTCIceGatherer) {
+ if (!window.RTCIceCandidate) {
+ window.RTCIceCandidate = function(args) {
+ return args;
+ };
+ }
+ if (!window.RTCSessionDescription) {
+ window.RTCSessionDescription = function(args) {
+ return args;
+ };
+ }
+ // this adds an additional event listener to MediaStrackTrack that signals
+ // when a tracks enabled property was changed. Workaround for a bug in
+ // addStream, see below. No longer required in 15025+
+ if (browserDetails.version < 15025) {
+ var origMSTEnabled = Object.getOwnPropertyDescriptor(
+ window.MediaStreamTrack.prototype, 'enabled');
+ Object.defineProperty(window.MediaStreamTrack.prototype, 'enabled', {
+ set: function(value) {
+ origMSTEnabled.set.call(this, value);
+ var ev = new Event('enabled');
+ ev.enabled = value;
+ this.dispatchEvent(ev);
+ }
+ });
+ }
+ }
+
+ // ORTC defines the DTMF sender a bit different.
+ // https://github.com/w3c/ortc/issues/714
+ if (window.RTCRtpSender && !('dtmf' in window.RTCRtpSender.prototype)) {
+ Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', {
+ get: function() {
+ if (this._dtmf === undefined) {
+ if (this.track.kind === 'audio') {
+ this._dtmf = new window.RTCDtmfSender(this);
+ } else if (this.track.kind === 'video') {
+ this._dtmf = null;
+ }
+ }
+ return this._dtmf;
+ }
+ });
+ }
+ // Edge currently only implements the RTCDtmfSender, not the
+ // RTCDTMFSender alias. See http://draft.ortc.org/#rtcdtmfsender2*
+ if (window.RTCDtmfSender && !window.RTCDTMFSender) {
+ window.RTCDTMFSender = window.RTCDtmfSender;
+ }
+
+ window.RTCPeerConnection =
+ shimRTCPeerConnection(window, browserDetails.version);
+ },
+ shimReplaceTrack: function(window) {
+ // ORTC has replaceTrack -- https://github.com/w3c/ortc/issues/614
+ if (window.RTCRtpSender &&
+ !('replaceTrack' in window.RTCRtpSender.prototype)) {
+ window.RTCRtpSender.prototype.replaceTrack =
+ window.RTCRtpSender.prototype.setTrack;
+ }
+ }
+};
+
+},{"../utils":13,"./getusermedia":9,"rtcpeerconnection-shim":1}],9:[function(require,module,exports){
+/*
+* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
+*
+* Use of this source code is governed by a BSD-style license
+* that can be found in the LICENSE file in the root of the source
+* tree.
+*/
+/* eslint-env node */
+'use strict';
+
+// Expose public methods.
+module.exports = function(window) {
+ var navigator = window && window.navigator;
+
+ var shimError_ = function(e) {
+ return {
+ name: {PermissionDeniedError: 'NotAllowedError'}[e.name] || e.name,
+ message: e.message,
+ constraint: e.constraint,
+ toString: function() {
+ return this.name;
+ }
+ };
+ };
+
+ // getUserMedia error shim.
+ var origGetUserMedia = navigator.mediaDevices.getUserMedia.
+ bind(navigator.mediaDevices);
+ navigator.mediaDevices.getUserMedia = function(c) {
+ return origGetUserMedia(c).catch(function(e) {
+ return Promise.reject(shimError_(e));
+ });
+ };
+};
+
+},{}],10:[function(require,module,exports){
+/*
+* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
+*
+* Use of this source code is governed by a BSD-style license
+* that can be found in the LICENSE file in the root of the source
+* tree.
+*/
+/* eslint-env node */
+'use strict';
+
+var utils = require('../utils');
+
+module.exports = {
+ shimGetUserMedia: require('./getusermedia'),
+ shimOnTrack: function(window) {
+ if (typeof window === 'object' && window.RTCPeerConnection && !('ontrack' in
+ window.RTCPeerConnection.prototype)) {
+ Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', {
+ get: function() {
+ return this._ontrack;
+ },
+ set: function(f) {
+ if (this._ontrack) {
+ this.removeEventListener('track', this._ontrack);
+ this.removeEventListener('addstream', this._ontrackpoly);
+ }
+ this.addEventListener('track', this._ontrack = f);
+ this.addEventListener('addstream', this._ontrackpoly = function(e) {
+ e.stream.getTracks().forEach(function(track) {
+ var event = new Event('track');
+ event.track = track;
+ event.receiver = {track: track};
+ event.transceiver = {receiver: event.receiver};
+ event.streams = [e.stream];
+ this.dispatchEvent(event);
+ }.bind(this));
+ }.bind(this));
+ }
+ });
+ }
+ if (typeof window === 'object' && window.RTCTrackEvent &&
+ ('receiver' in window.RTCTrackEvent.prototype) &&
+ !('transceiver' in window.RTCTrackEvent.prototype)) {
+ Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', {
+ get: function() {
+ return {receiver: this.receiver};
+ }
+ });
+ }
+ },
+
+ shimSourceObject: function(window) {
+ // Firefox has supported mozSrcObject since FF22, unprefixed in 42.
+ if (typeof window === 'object') {
+ if (window.HTMLMediaElement &&
+ !('srcObject' in window.HTMLMediaElement.prototype)) {
+ // Shim the srcObject property, once, when HTMLMediaElement is found.
+ Object.defineProperty(window.HTMLMediaElement.prototype, 'srcObject', {
+ get: function() {
+ return this.mozSrcObject;
+ },
+ set: function(stream) {
+ this.mozSrcObject = stream;
+ }
+ });
+ }
+ }
+ },
+
+ shimPeerConnection: function(window) {
+ var browserDetails = utils.detectBrowser(window);
+
+ if (typeof window !== 'object' || !(window.RTCPeerConnection ||
+ window.mozRTCPeerConnection)) {
+ return; // probably media.peerconnection.enabled=false in about:config
+ }
+ // The RTCPeerConnection object.
+ if (!window.RTCPeerConnection) {
+ window.RTCPeerConnection = function(pcConfig, pcConstraints) {
+ if (browserDetails.version < 38) {
+ // .urls is not supported in FF < 38.
+ // create RTCIceServers with a single url.
+ if (pcConfig && pcConfig.iceServers) {
+ var newIceServers = [];
+ for (var i = 0; i < pcConfig.iceServers.length; i++) {
+ var server = pcConfig.iceServers[i];
+ if (server.hasOwnProperty('urls')) {
+ for (var j = 0; j < server.urls.length; j++) {
+ var newServer = {
+ url: server.urls[j]
+ };
+ if (server.urls[j].indexOf('turn') === 0) {
+ newServer.username = server.username;
+ newServer.credential = server.credential;
+ }
+ newIceServers.push(newServer);
+ }
+ } else {
+ newIceServers.push(pcConfig.iceServers[i]);
+ }
+ }
+ pcConfig.iceServers = newIceServers;
+ }
+ }
+ return new window.mozRTCPeerConnection(pcConfig, pcConstraints);
+ };
+ window.RTCPeerConnection.prototype =
+ window.mozRTCPeerConnection.prototype;
+
+ // wrap static methods. Currently just generateCertificate.
+ if (window.mozRTCPeerConnection.generateCertificate) {
+ Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', {
+ get: function() {
+ return window.mozRTCPeerConnection.generateCertificate;
+ }
+ });
+ }
+
+ window.RTCSessionDescription = window.mozRTCSessionDescription;
+ window.RTCIceCandidate = window.mozRTCIceCandidate;
+ }
+
+ // shim away need for obsolete RTCIceCandidate/RTCSessionDescription.
+ ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate']
+ .forEach(function(method) {
+ var nativeMethod = window.RTCPeerConnection.prototype[method];
+ window.RTCPeerConnection.prototype[method] = function() {
+ arguments[0] = new ((method === 'addIceCandidate') ?
+ window.RTCIceCandidate :
+ window.RTCSessionDescription)(arguments[0]);
+ return nativeMethod.apply(this, arguments);
+ };
+ });
+
+ // support for addIceCandidate(null or undefined)
+ var nativeAddIceCandidate =
+ window.RTCPeerConnection.prototype.addIceCandidate;
+ window.RTCPeerConnection.prototype.addIceCandidate = function() {
+ if (!arguments[0]) {
+ if (arguments[1]) {
+ arguments[1].apply(null);
+ }
+ return Promise.resolve();
+ }
+ return nativeAddIceCandidate.apply(this, arguments);
+ };
+
+ // shim getStats with maplike support
+ var makeMapStats = function(stats) {
+ var map = new Map();
+ Object.keys(stats).forEach(function(key) {
+ map.set(key, stats[key]);
+ map[key] = stats[key];
+ });
+ return map;
+ };
+
+ var modernStatsTypes = {
+ inboundrtp: 'inbound-rtp',
+ outboundrtp: 'outbound-rtp',
+ candidatepair: 'candidate-pair',
+ localcandidate: 'local-candidate',
+ remotecandidate: 'remote-candidate'
+ };
+
+ var nativeGetStats = window.RTCPeerConnection.prototype.getStats;
+ window.RTCPeerConnection.prototype.getStats = function(
+ selector,
+ onSucc,
+ onErr
+ ) {
+ return nativeGetStats.apply(this, [selector || null])
+ .then(function(stats) {
+ if (browserDetails.version < 48) {
+ stats = makeMapStats(stats);
+ }
+ if (browserDetails.version < 53 && !onSucc) {
+ // Shim only promise getStats with spec-hyphens in type names
+ // Leave callback version alone; misc old uses of forEach before Map
+ try {
+ stats.forEach(function(stat) {
+ stat.type = modernStatsTypes[stat.type] || stat.type;
+ });
+ } catch (e) {
+ if (e.name !== 'TypeError') {
+ throw e;
+ }
+ // Avoid TypeError: "type" is read-only, in old versions. 34-43ish
+ stats.forEach(function(stat, i) {
+ stats.set(i, Object.assign({}, stat, {
+ type: modernStatsTypes[stat.type] || stat.type
+ }));
+ });
+ }
+ }
+ return stats;
+ })
+ .then(onSucc, onErr);
+ };
+ },
+
+ shimRemoveStream: function(window) {
+ if (!window.RTCPeerConnection ||
+ 'removeStream' in window.RTCPeerConnection.prototype) {
+ return;
+ }
+ window.RTCPeerConnection.prototype.removeStream = function(stream) {
+ var pc = this;
+ utils.deprecated('removeStream', 'removeTrack');
+ this.getSenders().forEach(function(sender) {
+ if (sender.track && stream.getTracks().indexOf(sender.track) !== -1) {
+ pc.removeTrack(sender);
+ }
+ });
+ };
+ }
+};
+
+},{"../utils":13,"./getusermedia":11}],11:[function(require,module,exports){
+/*
+* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
+*
+* Use of this source code is governed by a BSD-style license
+* that can be found in the LICENSE file in the root of the source
+* tree.
+*/
+/* eslint-env node */
+'use strict';
+
+var utils = require('../utils');
+var logging = utils.log;
+
+// Expose public methods.
+module.exports = function(window) {
+ var browserDetails = utils.detectBrowser(window);
+ var navigator = window && window.navigator;
+ var MediaStreamTrack = window && window.MediaStreamTrack;
+
+ var shimError_ = function(e) {
+ return {
+ name: {
+ InternalError: 'NotReadableError',
+ NotSupportedError: 'TypeError',
+ PermissionDeniedError: 'NotAllowedError',
+ SecurityError: 'NotAllowedError'
+ }[e.name] || e.name,
+ message: {
+ 'The operation is insecure.': 'The request is not allowed by the ' +
+ 'user agent or the platform in the current context.'
+ }[e.message] || e.message,
+ constraint: e.constraint,
+ toString: function() {
+ return this.name + (this.message && ': ') + this.message;
+ }
+ };
+ };
+
+ // getUserMedia constraints shim.
+ var getUserMedia_ = function(constraints, onSuccess, onError) {
+ var constraintsToFF37_ = function(c) {
+ if (typeof c !== 'object' || c.require) {
+ return c;
+ }
+ var require = [];
+ Object.keys(c).forEach(function(key) {
+ if (key === 'require' || key === 'advanced' || key === 'mediaSource') {
+ return;
+ }
+ var r = c[key] = (typeof c[key] === 'object') ?
+ c[key] : {ideal: c[key]};
+ if (r.min !== undefined ||
+ r.max !== undefined || r.exact !== undefined) {
+ require.push(key);
+ }
+ if (r.exact !== undefined) {
+ if (typeof r.exact === 'number') {
+ r. min = r.max = r.exact;
+ } else {
+ c[key] = r.exact;
+ }
+ delete r.exact;
+ }
+ if (r.ideal !== undefined) {
+ c.advanced = c.advanced || [];
+ var oc = {};
+ if (typeof r.ideal === 'number') {
+ oc[key] = {min: r.ideal, max: r.ideal};
+ } else {
+ oc[key] = r.ideal;
+ }
+ c.advanced.push(oc);
+ delete r.ideal;
+ if (!Object.keys(r).length) {
+ delete c[key];
+ }
+ }
+ });
+ if (require.length) {
+ c.require = require;
+ }
+ return c;
+ };
+ constraints = JSON.parse(JSON.stringify(constraints));
+ if (browserDetails.version < 38) {
+ logging('spec: ' + JSON.stringify(constraints));
+ if (constraints.audio) {
+ constraints.audio = constraintsToFF37_(constraints.audio);
+ }
+ if (constraints.video) {
+ constraints.video = constraintsToFF37_(constraints.video);
+ }
+ logging('ff37: ' + JSON.stringify(constraints));
+ }
+ return navigator.mozGetUserMedia(constraints, onSuccess, function(e) {
+ onError(shimError_(e));
+ });
+ };
+
+ // Returns the result of getUserMedia as a Promise.
+ var getUserMediaPromise_ = function(constraints) {
+ return new Promise(function(resolve, reject) {
+ getUserMedia_(constraints, resolve, reject);
+ });
+ };
+
+ // Shim for mediaDevices on older versions.
+ if (!navigator.mediaDevices) {
+ navigator.mediaDevices = {getUserMedia: getUserMediaPromise_,
+ addEventListener: function() { },
+ removeEventListener: function() { }
+ };
+ }
+ navigator.mediaDevices.enumerateDevices =
+ navigator.mediaDevices.enumerateDevices || function() {
+ return new Promise(function(resolve) {
+ var infos = [
+ {kind: 'audioinput', deviceId: 'default', label: '', groupId: ''},
+ {kind: 'videoinput', deviceId: 'default', label: '', groupId: ''}
+ ];
+ resolve(infos);
+ });
+ };
+
+ if (browserDetails.version < 41) {
+ // Work around http://bugzil.la/1169665
+ var orgEnumerateDevices =
+ navigator.mediaDevices.enumerateDevices.bind(navigator.mediaDevices);
+ navigator.mediaDevices.enumerateDevices = function() {
+ return orgEnumerateDevices().then(undefined, function(e) {
+ if (e.name === 'NotFoundError') {
+ return [];
+ }
+ throw e;
+ });
+ };
+ }
+ if (browserDetails.version < 49) {
+ var origGetUserMedia = navigator.mediaDevices.getUserMedia.
+ bind(navigator.mediaDevices);
+ navigator.mediaDevices.getUserMedia = function(c) {
+ return origGetUserMedia(c).then(function(stream) {
+ // Work around https://bugzil.la/802326
+ if (c.audio && !stream.getAudioTracks().length ||
+ c.video && !stream.getVideoTracks().length) {
+ stream.getTracks().forEach(function(track) {
+ track.stop();
+ });
+ throw new DOMException('The object can not be found here.',
+ 'NotFoundError');
+ }
+ return stream;
+ }, function(e) {
+ return Promise.reject(shimError_(e));
+ });
+ };
+ }
+ if (!(browserDetails.version > 55 &&
+ 'autoGainControl' in navigator.mediaDevices.getSupportedConstraints())) {
+ var remap = function(obj, a, b) {
+ if (a in obj && !(b in obj)) {
+ obj[b] = obj[a];
+ delete obj[a];
+ }
+ };
+
+ var nativeGetUserMedia = navigator.mediaDevices.getUserMedia.
+ bind(navigator.mediaDevices);
+ navigator.mediaDevices.getUserMedia = function(c) {
+ if (typeof c === 'object' && typeof c.audio === 'object') {
+ c = JSON.parse(JSON.stringify(c));
+ remap(c.audio, 'autoGainControl', 'mozAutoGainControl');
+ remap(c.audio, 'noiseSuppression', 'mozNoiseSuppression');
+ }
+ return nativeGetUserMedia(c);
+ };
+
+ if (MediaStreamTrack && MediaStreamTrack.prototype.getSettings) {
+ var nativeGetSettings = MediaStreamTrack.prototype.getSettings;
+ MediaStreamTrack.prototype.getSettings = function() {
+ var obj = nativeGetSettings.apply(this, arguments);
+ remap(obj, 'mozAutoGainControl', 'autoGainControl');
+ remap(obj, 'mozNoiseSuppression', 'noiseSuppression');
+ return obj;
+ };
+ }
+
+ if (MediaStreamTrack && MediaStreamTrack.prototype.applyConstraints) {
+ var nativeApplyConstraints = MediaStreamTrack.prototype.applyConstraints;
+ MediaStreamTrack.prototype.applyConstraints = function(c) {
+ if (this.kind === 'audio' && typeof c === 'object') {
+ c = JSON.parse(JSON.stringify(c));
+ remap(c, 'autoGainControl', 'mozAutoGainControl');
+ remap(c, 'noiseSuppression', 'mozNoiseSuppression');
+ }
+ return nativeApplyConstraints.apply(this, [c]);
+ };
+ }
+ }
+ navigator.getUserMedia = function(constraints, onSuccess, onError) {
+ if (browserDetails.version < 44) {
+ return getUserMedia_(constraints, onSuccess, onError);
+ }
+ // Replace Firefox 44+'s deprecation warning with unprefixed version.
+ utils.deprecated('navigator.getUserMedia',
+ 'navigator.mediaDevices.getUserMedia');
+ navigator.mediaDevices.getUserMedia(constraints).then(onSuccess, onError);
+ };
+};
+
+},{"../utils":13}],12:[function(require,module,exports){
+/*
+* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
+*
+* Use of this source code is governed by a BSD-style license
+* that can be found in the LICENSE file in the root of the source
+* tree.
+*/
+'use strict';
+var utils = require('../utils');
+
+module.exports = {
+ shimLocalStreamsAPI: function(window) {
+ if (typeof window !== 'object' || !window.RTCPeerConnection) {
+ return;
+ }
+ if (!('getLocalStreams' in window.RTCPeerConnection.prototype)) {
+ window.RTCPeerConnection.prototype.getLocalStreams = function() {
+ if (!this._localStreams) {
+ this._localStreams = [];
+ }
+ return this._localStreams;
+ };
+ }
+ if (!('getStreamById' in window.RTCPeerConnection.prototype)) {
+ window.RTCPeerConnection.prototype.getStreamById = function(id) {
+ var result = null;
+ if (this._localStreams) {
+ this._localStreams.forEach(function(stream) {
+ if (stream.id === id) {
+ result = stream;
+ }
+ });
+ }
+ if (this._remoteStreams) {
+ this._remoteStreams.forEach(function(stream) {
+ if (stream.id === id) {
+ result = stream;
+ }
+ });
+ }
+ return result;
+ };
+ }
+ if (!('addStream' in window.RTCPeerConnection.prototype)) {
+ var _addTrack = window.RTCPeerConnection.prototype.addTrack;
+ window.RTCPeerConnection.prototype.addStream = function(stream) {
+ if (!this._localStreams) {
+ this._localStreams = [];
+ }
+ if (this._localStreams.indexOf(stream) === -1) {
+ this._localStreams.push(stream);
+ }
+ var pc = this;
+ stream.getTracks().forEach(function(track) {
+ _addTrack.call(pc, track, stream);
+ });
+ };
+
+ window.RTCPeerConnection.prototype.addTrack = function(track, stream) {
+ if (stream) {
+ if (!this._localStreams) {
+ this._localStreams = [stream];
+ } else if (this._localStreams.indexOf(stream) === -1) {
+ this._localStreams.push(stream);
+ }
+ }
+ return _addTrack.call(this, track, stream);
+ };
+ }
+ if (!('removeStream' in window.RTCPeerConnection.prototype)) {
+ window.RTCPeerConnection.prototype.removeStream = function(stream) {
+ if (!this._localStreams) {
+ this._localStreams = [];
+ }
+ var index = this._localStreams.indexOf(stream);
+ if (index === -1) {
+ return;
+ }
+ this._localStreams.splice(index, 1);
+ var pc = this;
+ var tracks = stream.getTracks();
+ this.getSenders().forEach(function(sender) {
+ if (tracks.indexOf(sender.track) !== -1) {
+ pc.removeTrack(sender);
+ }
+ });
+ };
+ }
+ },
+ shimRemoteStreamsAPI: function(window) {
+ if (typeof window !== 'object' || !window.RTCPeerConnection) {
+ return;
+ }
+ if (!('getRemoteStreams' in window.RTCPeerConnection.prototype)) {
+ window.RTCPeerConnection.prototype.getRemoteStreams = function() {
+ return this._remoteStreams ? this._remoteStreams : [];
+ };
+ }
+ if (!('onaddstream' in window.RTCPeerConnection.prototype)) {
+ Object.defineProperty(window.RTCPeerConnection.prototype, 'onaddstream', {
+ get: function() {
+ return this._onaddstream;
+ },
+ set: function(f) {
+ var pc = this;
+ if (this._onaddstream) {
+ this.removeEventListener('addstream', this._onaddstream);
+ this.removeEventListener('track', this._onaddstreampoly);
+ }
+ this.addEventListener('addstream', this._onaddstream = f);
+ this.addEventListener('track', this._onaddstreampoly = function(e) {
+ e.streams.forEach(function(stream) {
+ if (!pc._remoteStreams) {
+ pc._remoteStreams = [];
+ }
+ if (pc._remoteStreams.indexOf(stream) >= 0) {
+ return;
+ }
+ pc._remoteStreams.push(stream);
+ var event = new Event('addstream');
+ event.stream = stream;
+ pc.dispatchEvent(event);
+ });
+ });
+ }
+ });
+ }
+ },
+ shimCallbacksAPI: function(window) {
+ if (typeof window !== 'object' || !window.RTCPeerConnection) {
+ return;
+ }
+ var prototype = window.RTCPeerConnection.prototype;
+ var createOffer = prototype.createOffer;
+ var createAnswer = prototype.createAnswer;
+ var setLocalDescription = prototype.setLocalDescription;
+ var setRemoteDescription = prototype.setRemoteDescription;
+ var addIceCandidate = prototype.addIceCandidate;
+
+ prototype.createOffer = function(successCallback, failureCallback) {
+ var options = (arguments.length >= 2) ? arguments[2] : arguments[0];
+ var promise = createOffer.apply(this, [options]);
+ if (!failureCallback) {
+ return promise;
+ }
+ promise.then(successCallback, failureCallback);
+ return Promise.resolve();
+ };
+
+ prototype.createAnswer = function(successCallback, failureCallback) {
+ var options = (arguments.length >= 2) ? arguments[2] : arguments[0];
+ var promise = createAnswer.apply(this, [options]);
+ if (!failureCallback) {
+ return promise;
+ }
+ promise.then(successCallback, failureCallback);
+ return Promise.resolve();
+ };
+
+ var withCallback = function(description, successCallback, failureCallback) {
+ var promise = setLocalDescription.apply(this, [description]);
+ if (!failureCallback) {
+ return promise;
+ }
+ promise.then(successCallback, failureCallback);
+ return Promise.resolve();
+ };
+ prototype.setLocalDescription = withCallback;
+
+ withCallback = function(description, successCallback, failureCallback) {
+ var promise = setRemoteDescription.apply(this, [description]);
+ if (!failureCallback) {
+ return promise;
+ }
+ promise.then(successCallback, failureCallback);
+ return Promise.resolve();
+ };
+ prototype.setRemoteDescription = withCallback;
+
+ withCallback = function(candidate, successCallback, failureCallback) {
+ var promise = addIceCandidate.apply(this, [candidate]);
+ if (!failureCallback) {
+ return promise;
+ }
+ promise.then(successCallback, failureCallback);
+ return Promise.resolve();
+ };
+ prototype.addIceCandidate = withCallback;
+ },
+ shimGetUserMedia: function(window) {
+ var navigator = window && window.navigator;
+
+ if (!navigator.getUserMedia) {
+ if (navigator.webkitGetUserMedia) {
+ navigator.getUserMedia = navigator.webkitGetUserMedia.bind(navigator);
+ } else if (navigator.mediaDevices &&
+ navigator.mediaDevices.getUserMedia) {
+ navigator.getUserMedia = function(constraints, cb, errcb) {
+ navigator.mediaDevices.getUserMedia(constraints)
+ .then(cb, errcb);
+ }.bind(navigator);
+ }
+ }
+ },
+ shimRTCIceServerUrls: function(window) {
+ // migrate from non-spec RTCIceServer.url to RTCIceServer.urls
+ var OrigPeerConnection = window.RTCPeerConnection;
+ window.RTCPeerConnection = function(pcConfig, pcConstraints) {
+ if (pcConfig && pcConfig.iceServers) {
+ var newIceServers = [];
+ for (var i = 0; i < pcConfig.iceServers.length; i++) {
+ var server = pcConfig.iceServers[i];
+ if (!server.hasOwnProperty('urls') &&
+ server.hasOwnProperty('url')) {
+ utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls');
+ server = JSON.parse(JSON.stringify(server));
+ server.urls = server.url;
+ delete server.url;
+ newIceServers.push(server);
+ } else {
+ newIceServers.push(pcConfig.iceServers[i]);
+ }
+ }
+ pcConfig.iceServers = newIceServers;
+ }
+ return new OrigPeerConnection(pcConfig, pcConstraints);
+ };
+ window.RTCPeerConnection.prototype = OrigPeerConnection.prototype;
+ // wrap static methods. Currently just generateCertificate.
+ if ('generateCertificate' in window.RTCPeerConnection) {
+ Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', {
+ get: function() {
+ return OrigPeerConnection.generateCertificate;
+ }
+ });
+ }
+ },
+ shimTrackEventTransceiver: function(window) {
+ // Add event.transceiver member over deprecated event.receiver
+ if (typeof window === 'object' && window.RTCPeerConnection &&
+ ('receiver' in window.RTCTrackEvent.prototype) &&
+ // can't check 'transceiver' in window.RTCTrackEvent.prototype, as it is
+ // defined for some reason even when window.RTCTransceiver is not.
+ !window.RTCTransceiver) {
+ Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', {
+ get: function() {
+ return {receiver: this.receiver};
+ }
+ });
+ }
+ },
+
+ shimCreateOfferLegacy: function(window) {
+ var origCreateOffer = window.RTCPeerConnection.prototype.createOffer;
+ window.RTCPeerConnection.prototype.createOffer = function(offerOptions) {
+ var pc = this;
+ if (offerOptions) {
+ if (typeof offerOptions.offerToReceiveAudio !== 'undefined') {
+ // support bit values
+ offerOptions.offerToReceiveAudio = !!offerOptions.offerToReceiveAudio;
+ }
+ var audioTransceiver = pc.getTransceivers().find(function(transceiver) {
+ return transceiver.sender.track &&
+ transceiver.sender.track.kind === 'audio';
+ });
+ if (offerOptions.offerToReceiveAudio === false && audioTransceiver) {
+ if (audioTransceiver.direction === 'sendrecv') {
+ if (audioTransceiver.setDirection) {
+ audioTransceiver.setDirection('sendonly');
+ } else {
+ audioTransceiver.direction = 'sendonly';
+ }
+ } else if (audioTransceiver.direction === 'recvonly') {
+ if (audioTransceiver.setDirection) {
+ audioTransceiver.setDirection('inactive');
+ } else {
+ audioTransceiver.direction = 'inactive';
+ }
+ }
+ } else if (offerOptions.offerToReceiveAudio === true &&
+ !audioTransceiver) {
+ pc.addTransceiver('audio');
+ }
+
+
+ if (typeof offerOptions.offerToReceiveAudio !== 'undefined') {
+ // support bit values
+ offerOptions.offerToReceiveVideo = !!offerOptions.offerToReceiveVideo;
+ }
+ var videoTransceiver = pc.getTransceivers().find(function(transceiver) {
+ return transceiver.sender.track &&
+ transceiver.sender.track.kind === 'video';
+ });
+ if (offerOptions.offerToReceiveVideo === false && videoTransceiver) {
+ if (videoTransceiver.direction === 'sendrecv') {
+ videoTransceiver.setDirection('sendonly');
+ } else if (videoTransceiver.direction === 'recvonly') {
+ videoTransceiver.setDirection('inactive');
+ }
+ } else if (offerOptions.offerToReceiveVideo === true &&
+ !videoTransceiver) {
+ pc.addTransceiver('video');
+ }
+ }
+ return origCreateOffer.apply(pc, arguments);
+ };
+ }
+};
+
+},{"../utils":13}],13:[function(require,module,exports){
+/*
+* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
+*
+* Use of this source code is governed by a BSD-style license
+* that can be found in the LICENSE file in the root of the source
+* tree.
+*/
+/* eslint-env node */
+'use strict';
+
+var logDisabled_ = true;
+var deprecationWarnings_ = true;
+
+/**
+ * Extract browser version out of the provided user agent string.
+ *
+ * @param {!string} uastring userAgent string.
+ * @param {!string} expr Regular expression used as match criteria.
+ * @param {!number} pos position in the version string to be returned.
+ * @return {!number} browser version.
+ */
+function extractVersion(uastring, expr, pos) {
+ var match = uastring.match(expr);
+ return match && match.length >= pos && parseInt(match[pos], 10);
+}
+
+// Wraps the peerconnection event eventNameToWrap in a function
+// which returns the modified event object.
+function wrapPeerConnectionEvent(window, eventNameToWrap, wrapper) {
+ if (!window.RTCPeerConnection) {
+ return;
+ }
+ var proto = window.RTCPeerConnection.prototype;
+ var nativeAddEventListener = proto.addEventListener;
+ proto.addEventListener = function(nativeEventName, cb) {
+ if (nativeEventName !== eventNameToWrap) {
+ return nativeAddEventListener.apply(this, arguments);
+ }
+ var wrappedCallback = function(e) {
+ cb(wrapper(e));
+ };
+ this._eventMap = this._eventMap || {};
+ this._eventMap[cb] = wrappedCallback;
+ return nativeAddEventListener.apply(this, [nativeEventName,
+ wrappedCallback]);
+ };
+
+ var nativeRemoveEventListener = proto.removeEventListener;
+ proto.removeEventListener = function(nativeEventName, cb) {
+ if (nativeEventName !== eventNameToWrap || !this._eventMap
+ || !this._eventMap[cb]) {
+ return nativeRemoveEventListener.apply(this, arguments);
+ }
+ var unwrappedCb = this._eventMap[cb];
+ delete this._eventMap[cb];
+ return nativeRemoveEventListener.apply(this, [nativeEventName,
+ unwrappedCb]);
+ };
+
+ Object.defineProperty(proto, 'on' + eventNameToWrap, {
+ get: function() {
+ return this['_on' + eventNameToWrap];
+ },
+ set: function(cb) {
+ if (this['_on' + eventNameToWrap]) {
+ this.removeEventListener(eventNameToWrap,
+ this['_on' + eventNameToWrap]);
+ delete this['_on' + eventNameToWrap];
+ }
+ if (cb) {
+ this.addEventListener(eventNameToWrap,
+ this['_on' + eventNameToWrap] = cb);
+ }
+ }
+ });
+}
+
+// Utility methods.
+module.exports = {
+ extractVersion: extractVersion,
+ wrapPeerConnectionEvent: wrapPeerConnectionEvent,
+ disableLog: function(bool) {
+ if (typeof bool !== 'boolean') {
+ return new Error('Argument type: ' + typeof bool +
+ '. Please use a boolean.');
+ }
+ logDisabled_ = bool;
+ return (bool) ? 'adapter.js logging disabled' :
+ 'adapter.js logging enabled';
+ },
+
+ /**
+ * Disable or enable deprecation warnings
+ * @param {!boolean} bool set to true to disable warnings.
+ */
+ disableWarnings: function(bool) {
+ if (typeof bool !== 'boolean') {
+ return new Error('Argument type: ' + typeof bool +
+ '. Please use a boolean.');
+ }
+ deprecationWarnings_ = !bool;
+ return 'adapter.js deprecation warnings ' + (bool ? 'disabled' : 'enabled');
+ },
+
+ log: function() {
+ if (typeof window === 'object') {
+ if (logDisabled_) {
+ return;
+ }
+ if (typeof console !== 'undefined' && typeof console.log === 'function') {
+ console.log.apply(console, arguments);
+ }
+ }
+ },
+
+ /**
+ * Shows a deprecation warning suggesting the modern and spec-compatible API.
+ */
+ deprecated: function(oldMethod, newMethod) {
+ if (!deprecationWarnings_) {
+ return;
+ }
+ console.warn(oldMethod + ' is deprecated, please use ' + newMethod +
+ ' instead.');
+ },
+
+ /**
+ * Browser detector.
+ *
+ * @return {object} result containing browser and version
+ * properties.
+ */
+ detectBrowser: function(window) {
+ var navigator = window && window.navigator;
+
+ // Returned result object.
+ var result = {};
+ result.browser = null;
+ result.version = null;
+
+ // Fail early if it's not a browser
+ if (typeof window === 'undefined' || !window.navigator) {
+ result.browser = 'Not a browser.';
+ return result;
+ }
+
+ if (navigator.mozGetUserMedia) { // Firefox.
+ result.browser = 'firefox';
+ result.version = extractVersion(navigator.userAgent,
+ /Firefox\/(\d+)\./, 1);
+ } else if (navigator.webkitGetUserMedia) {
+ // Chrome, Chromium, Webview, Opera.
+ // Version matches Chrome/WebRTC version.
+ result.browser = 'chrome';
+ result.version = extractVersion(navigator.userAgent,
+ /Chrom(e|ium)\/(\d+)\./, 2);
+ } else if (navigator.mediaDevices &&
+ navigator.userAgent.match(/Edge\/(\d+).(\d+)$/)) { // Edge.
+ result.browser = 'edge';
+ result.version = extractVersion(navigator.userAgent,
+ /Edge\/(\d+).(\d+)$/, 2);
+ } else if (window.RTCPeerConnection &&
+ navigator.userAgent.match(/AppleWebKit\/(\d+)\./)) { // Safari.
+ result.browser = 'safari';
+ result.version = extractVersion(navigator.userAgent,
+ /AppleWebKit\/(\d+)\./, 1);
+ } else { // Default fallthrough: not supported.
+ result.browser = 'Not a supported browser.';
+ return result;
+ }
+
+ return result;
+ }
+};
+
+},{}]},{},[3])(3)
+});
